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Bastien M, Mezaache S, Donadille C, Martin V, Appel L, Lebrun M, Briand Madrid L, Barré T, Roux P. Exclusive Therapeutic Use of Cannabis in a Large Sample of Daily Cannabis Users in France: A Cross-Sectional Survey. J Psychoactive Drugs 2024; 56:353-363. [PMID: 37315569 DOI: 10.1080/02791072.2023.2224313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Revised: 03/27/2023] [Accepted: 03/30/2023] [Indexed: 06/16/2023]
Abstract
Many cannabis users report therapeutic benefits from cannabis consumption, even when not recommended by a physician. To date, few data on therapeutic users of cannabis in France are available. Using a cross-sectional survey held in 2020, we collected sociodemographic, health and substance use data from 4150 daily cannabis users in France. We used multivariable logistic regression to assess factors associated with exclusive therapeutic use of cannabis. Approximately 10% (n = 453) of the participants reported using cannabis exclusively for therapeutic purposes. Exclusive therapeutic users of cannabis differed from non-exclusive (i.e. recreational and mixed) users, especially regarding age (aOR [95%CI] = 1.01 [1.00-1.02]), employment (aOR = 0.61 [0.47-0.79]), urban area of residence (aOR = 0.75 [0.60-0.94]), physical (aOR = 2.95 [2.34-3.70]) and mental health condition (aOR = 2.63 [1.99-3.49]), mode of cannabis administration (non-smoked, aOR = 1.89 [1.22-2.95); smoked with little tobacco, aOR = 1.39 [1.09-1.76]), frequency of cannabis use (aOR = 1.04 [1.01-1.06]), home cultivation (aOR = 1.56 [1.13-2.15]), at-ridsk alcohol use (aOR = 0.68 [0.54-0.84]), and previous-month opiate use (aOR = 1.67 [1.22-2.30]). A greater understanding of the distinct profiles of regular cannabis users could inform harm reduction strategies and care access for this population. Further studies are needed to better understand the boundaries between therapeutic and recreational use.
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Affiliation(s)
- Martin Bastien
- Aix-Marseille Université, INSERM, IRD, SESSTIM, Sciences Économiques & Sociales de la santé & Traitement de L'information Médicale, Marseille, France
| | - Salim Mezaache
- Aix-Marseille Université, INSERM, IRD, SESSTIM, Sciences Économiques & Sociales de la santé & Traitement de L'information Médicale, Marseille, France
| | - Cécile Donadille
- Aix-Marseille Université, INSERM, IRD, SESSTIM, Sciences Économiques & Sociales de la santé & Traitement de L'information Médicale, Marseille, France
| | | | | | | | - Laélia Briand Madrid
- Aix-Marseille Université, INSERM, IRD, SESSTIM, Sciences Économiques & Sociales de la santé & Traitement de L'information Médicale, Marseille, France
| | - Tangui Barré
- Aix-Marseille Université, INSERM, IRD, SESSTIM, Sciences Économiques & Sociales de la santé & Traitement de L'information Médicale, Marseille, France
| | - Perrine Roux
- Aix-Marseille Université, INSERM, IRD, SESSTIM, Sciences Économiques & Sociales de la santé & Traitement de L'information Médicale, Marseille, France
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Pipitone RN, Banai B, Walters J, Dautrich T, Schuller K, Rosenthal M. Using Smartphone Technology to Track Real-Time Changes in Anxiety/Depression Symptomatology Among Florida Cannabis Users. CANNABIS (ALBUQUERQUE, N.M.) 2024; 7:123-134. [PMID: 38975597 PMCID: PMC11225978 DOI: 10.26828/cannabis/2024/000223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 07/09/2024]
Abstract
Objective Recent scientific attention has focused on the therapeutic effectiveness of cannabis use on a variety of physical and mental ailments. The present study uses smartphone technology to assess self-reported experiences of Florida cannabis users to understand how cannabis may impact anxiety and depression symptomatology. Method Several hundred Releaf App™ users from the state of Florida provided anonymous, real-time reports of their symptoms of anxiety and/or depression immediately before and after cannabis use sessions. Linear mixed-effects modeling was used to analyze the data at the symptom and user level. Results Results showed that for the majority of users, cannabis use was associated with a significant decrease in depression and anxiety symptomatology. While symptom type, doses per session, consumption method, and CBD levels were significant predictors of relief change, their effect sizes were small and should be interpreted with caution. At the user level, those who had positive relief outcomes in anxiety reported more doses and sessions, and those in the depression group reported more sessions. Conclusions Our results generally support the therapeutic effectiveness of cannabis against depression/anxiety symptomatology. Future work should include standardized statistics and effect size estimates for a better understanding of each variable's practical contribution to this area of study.
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Affiliation(s)
| | - Benjamin Banai
- Banai Analitika, Josipa Jurja Strossmayera 341, 31000 Osijek, Croatia
| | - Jessica Walters
- CannaMD, 7932 West Sand Lake Road, Suite 205, Orlando, FL 32819
| | - Tyler Dautrich
- MoreBetter (Releaf App), PO Box 382, Hyattsville, MD 20781-0382
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Walker M, Lake S, Tempero J, Ong K, Lucas P. Age-related Patterns of Medical Cannabis Use: A Survey of Authorized Patients in Canada. CANNABIS (ALBUQUERQUE, N.M.) 2024; 7:135-149. [PMID: 38975599 PMCID: PMC11225977 DOI: 10.26828/cannabis/2024/000208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 07/09/2024]
Abstract
Objective An increasing number of Canadians are registering as authorized users of medical cannabis. Older patients comprise a growing subset of this population; however, relatively little information exists around age-related patterns of medical cannabis use. Methods The Canadian Cannabis Patient Survey (CCPS) is a large cross-sectional survey of authorized medical cannabis patients in Canada. This publication summarizes the results of the CCPS 2021, with a focus on age-related outcomes and the elderly sub-population. Results The survey was completed by 2,697 patients. The mean age of participants was 54.3 years of age and the proportion of female respondents was 49.1%. Among older patients, pain was the most common symptom, while anxiety was the most common symptom reported by younger patients. Older patients exhibited a significant preference for oral administration over inhalation of medical cannabis when compared to younger patients, respectively (p>0.05). Among patients taking prescription opioids, most of whom were older patients, 54% reported a decrease in use concurrent with medical cannabis. Conclusions Older patients comprise a growing subset of medical cannabis patients, which is also reflected in CCPS participants over time. This patient population exhibits different patterns of use compared to their younger counterparts, preferring high CBD orally ingested formulations, which they use primarily to treat pain-related illnesses/symptoms. Overall, study participants reported that cannabis had a high degree of efficacy in alleviating their illness/symptoms, and many reported a reduction in their use of prescription opioids, alcohol, tobacco, and other substances.
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Affiliation(s)
| | - Stephanie Lake
- UCLA Center for Cannabis and Cannabinoids, Jane and Terry Semel Institute for Neuroscience and Human Behavior, Department of Psychiatry and Biobehavioral Sciences, University of California, Los Angeles
| | | | - Kaye Ong
- Tilray Canada - Nanaimo, British Columbia
| | - Philippe Lucas
- Tilray Canada - Nanaimo, British Columbia
- Social Dimensions of Health, University of Victoria
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Xiao ATY, Turk T, Deol K, Zhang S, Aref HAT, Campbell A, Jones A, Yamamoto SS, Dennett L, Kolewaski L, Sadowski CA, Yacyshyn EA. Evidence for the use of cannabis-based medicines in osteoarthritis: a scoping review. Clin Rheumatol 2024:10.1007/s10067-024-07001-7. [PMID: 38853226 DOI: 10.1007/s10067-024-07001-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2023] [Revised: 04/26/2024] [Accepted: 05/06/2024] [Indexed: 06/11/2024]
Abstract
The purpose of this study was to conduct a scoping review to describe the evidence on the efficacy and safety of using cannabis-based medicines for osteoarthritis. The review was conducted following the framework proposed by Arksey and O'Malley and reported following PRISMA extension for scoping reviews guidelines. We conducted a comprehensive search across various databases including MEDLINE, Embase, Cochrane Library, CINAHL, Scopus, and Proquest, spanning from inception of each database to March 2023. We retrieved 2533 citations, and after deduplication, title and abstract screening, and full-text screening, 10 articles were included for analysis. These studies were composed of randomized-controlled trials (n = 4/10), cross-sectional surveys (n = 3/10), case studies (n = 2/10), and a cohort study (n = 1/10). Evidence for using cannabis-based medicines was mixed, with just 60% (n = 6/10) of included studies reporting statistically significant improvements in pain. Studies with larger samples sizes and longer durations of exposure did not find significant benefits for pain. The few adverse effects reported were generally mild and affected a minority of participants. Several studies also discovered that cannabis-based medicines were associated with a reduction in opioid use. Currently available data on the use of cannabis-based medicines in osteoarthritis is insufficient to make recommendations. Future research should address concerns regarding small sample sizes and short treatment durations to provide a more robust evidence base. Key Points • Current evidence remains mixed; studies that found a positive benefit with using cannabis-based medicines had limitations with small sample sizes and short durations of exposure • The use of cannabis-based medicines in osteoarthritis appears to be generally well tolerated, adverse effects are mild and experienced by a minority of participants • Cannabis-based medicines may decrease the use of opioids in patients with osteoarthritis • Future research should address the gaps in long-term efficacy and safety data.
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Affiliation(s)
- Andrew T Y Xiao
- Department of Medicine, Faculty of Medicine & Dentistry, University of Alberta, 8-130 Clinical Science Building, 11350-83rd Ave, Edmonton, AB, T6G 2G3, Canada
| | - Tarek Turk
- University of Alberta, Edmonton, AB, Canada
| | | | - Susan Zhang
- , Edmonton, AB, Canada
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, 3-229 Edmonton Clinic Health Academy, 11405 87 Ave, Edmonton, AB, T6G 1C9, Canada
| | - Heba A T Aref
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, 3-229 Edmonton Clinic Health Academy, 11405 87 Ave, Edmonton, AB, T6G 1C9, Canada
| | - Alexandra Campbell
- , Edmonton, AB, Canada
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, 3-229 Edmonton Clinic Health Academy, 11405 87 Ave, Edmonton, AB, T6G 1C9, Canada
| | - Allyson Jones
- Faculty of Rehabilitation Medicine - Physical Therapy, University of Alberta, Edmonton, AB, Canada
| | - Shelby S Yamamoto
- School of Public Health, University of Alberta, Edmonton, AB, Canada
| | - Liz Dennett
- Sperber Health Sciences Library, University of Alberta, Edmonton, AB, Canada
| | | | - Cheryl A Sadowski
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, 3-229 Edmonton Clinic Health Academy, 11405 87 Ave, Edmonton, AB, T6G 1C9, Canada.
| | - Elaine A Yacyshyn
- Department of Medicine, Faculty of Medicine & Dentistry, University of Alberta, 8-130 Clinical Science Building, 11350-83rd Ave, Edmonton, AB, T6G 2G3, Canada.
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Zhang C, Slawek DE, Ross J, Zolotov Y, Castillo F, Levin FR, Sohler NL, Minami H, Cunningham CO, Starrels JL, Arnsten JH. Factors Associated with Medical Cannabis Use After Certification: A Three-Month Longitudinal Study. Cannabis Cannabinoid Res 2024; 9:e859-e869. [PMID: 36961410 DOI: 10.1089/can.2022.0248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/25/2023] Open
Abstract
Background: Over the past decade, there has been increased utilization of medical cannabis (MC) in the United States. Few studies have described sociodemographic and clinical factors associated with MC use after certification and more specifically, factors associated with use of MC products with different cannabinoid profiles. Methods: We conducted a longitudinal cohort study of adults (N=225) with chronic or severe pain on opioids who were newly certified for MC in New York State and enrolled in the study between November 2018 and January 2022. We collected data over participants' first 3 months in the study, from web-based assessment of MC use every 2 weeks (unit of analysis). We used generalized estimating equation models to examine associations of sociodemographic and clinical factors with (1) MC use (vs. no MC use) and (2) use of MC products with different cannabinoid profiles. Results: On average, 29% of the participants used predominantly high delta-9-tetrahydrocannabinol (THC) MC products within the first 3 months of follow-up, 30% used other MC products, and 41% did not use MC products. Non-Hispanic White race, pain at multiple sites, and past 30-day sedative use were associated with a higher likelihood of MC use (vs. no MC use). Current tobacco use, unregulated cannabis use, and enrollment in the study during the COVID-19 pandemic were associated with a lower likelihood of MC use (vs. no MC use). Among participants reporting MC use, female gender and older age were associated with a lower likelihood of using predominantly high-THC MC products (vs. other MC products). Conclusion: White individuals were more likely to use MC after certification, which may be owing to access and cost issues. The findings that sedative use was associated with greater MC use, but tobacco and unregulated cannabis were associated with less MC use, may imply synergism and substitution that warrant further research. From the policy perspective, additional measures are needed to ensure equitable availability of and access to MC. Health practitioners should check patients' history and current use of sedative, tobacco, and unregulated cannabis before providing an MC recommendation and counsel patients on safe cannabis use. clinicaltrials.gov (NCT03268551).
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Affiliation(s)
- Chenshu Zhang
- Division of General Internal Medicine, Department of Medicine, Montefiore Health System, Bronx, New York, USA
- Department of Medicine, Einstein College of Medicine, New York, New York, USA
| | - Deepika E Slawek
- Division of General Internal Medicine, Department of Medicine, Montefiore Health System, Bronx, New York, USA
- Department of Medicine, Einstein College of Medicine, New York, New York, USA
| | - Jonathan Ross
- Division of General Internal Medicine, Department of Medicine, Montefiore Health System, Bronx, New York, USA
- Department of Medicine, Einstein College of Medicine, New York, New York, USA
| | - Yuval Zolotov
- Division of General Internal Medicine, Department of Medicine, Montefiore Health System, Bronx, New York, USA
- Department of Medicine, Einstein College of Medicine, New York, New York, USA
| | - Felipe Castillo
- Division on Substance Use Disorders, NY State Psychiatric Institute, New York, New York, USA
- Department of Psychiatry, Columbia University Irving Medical Center, New York, New York, USA
| | - Frances R Levin
- Division on Substance Use Disorders, NY State Psychiatric Institute, New York, New York, USA
- Department of Psychiatry, Columbia University Irving Medical Center, New York, New York, USA
| | - Nancy L Sohler
- Department of Community Health and Social Medicine, City University of New York, New York, New York, USA
| | - Haruka Minami
- Department of Psychology, Fordham University, Bronx, New York, USA
| | | | - Joanna L Starrels
- Division of General Internal Medicine, Department of Medicine, Montefiore Health System, Bronx, New York, USA
- Department of Medicine, Einstein College of Medicine, New York, New York, USA
| | - Julia H Arnsten
- Division of General Internal Medicine, Department of Medicine, Montefiore Health System, Bronx, New York, USA
- Department of Medicine, Einstein College of Medicine, New York, New York, USA
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Mills L, Arnold JC, Suraev A, Abelev SV, Zhou C, Arkell TR, McGregor IS, Lintzeris N. Medical cannabis use in Australia seven years after legalisation: findings from the online Cannabis as Medicine Survey 2022-2023 (CAMS-22). Harm Reduct J 2024; 21:104. [PMID: 38807133 PMCID: PMC11131250 DOI: 10.1186/s12954-024-00992-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Accepted: 03/25/2024] [Indexed: 05/30/2024] Open
Abstract
BACKGROUND Cannabis was legalised for medical purposes in 2016. Uptake was initially slow, but since 2019 there has been a large increase in the number of Australians who have been prescribed cannabis for medical reasons. Yet a significant number of consumers continue to treat their medical conditions via illicitly-sourced cannabis. Little is known about how these two groups of medical cannabis consumers differ. METHODS The anonymous Cannabis-As-Medicine Survey 2022-2023 (CAMS-22) was available for completion online from December 2022 to April 2023 to adult Australians who had used cannabis to treat a medical condition in the previous year. Recruitment occurred through social media, consumer forums, and medical practices. Questions included demographic characteristics, patterns of cannabis use, conditions treated, and self-rated effectiveness. RESULTS Of the 3323 respondents included in these analyses, 2352 (73%) mainly used prescribed medical cannabis, 871 (27%) mainly used illicit. Prescribed users were significantly more likely than illicit users to have had their health condition diagnosed (OR = 1.7, 95% CI 1.3, 2.2), to consume their cannabis via oral (OR = 1.9; CI 1.5, 2.4) or vaporised (OR = 5.2; CI 4.0, 6.8) routes, and to be sure of the composition of their medical cannabis (OR = 25.0; CI 16.7, 50.0). Prescribed users were significantly less likely to have used cannabis non-medically before medical use (OR = 0.6, CI 0.5, 0.7), consume cannabis via smoked routes (OR = 0.2, CI 0.1, 0.2), and to report any side effects (OR = 0.1; CI 0.1, 0.2). The most common conditions among both prescribed and illicit users were pain (37%), mental health (36%), and sleep (15%) conditions. Prescribed users were significantly more likely to use cannabis to mainly treat a pain (OR = 1.3; CI 1.1, 1.5) or sleep condition (OR = 1.4; CI 1.1, 1.7) and less likely to treat a mental health condition (OR = 0.8; CI 0.7, 0.9). There were no between-group differences in effectiveness with 97% saying medical cannabis had improved their symptoms. CONCLUSIONS From a harm-reduction perspective there is much to recommend prescribed medical cannabis; it has fewer side-effects than illicit, is used more safely (oral or vaporised versus smoked routes), gives consumers greater certainty regarding the composition and quality of their medicine, and does not risk exposure to the criminal justice system. Of concern, however, is the apparent willingness of prescribers to prescribe for indications for which there is limited evidence of efficacy, such as mental health and sleep conditions.
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Affiliation(s)
- Llewellyn Mills
- Specialty of Addiction Medicine, Faculty Medicine and Health, University of Sydney, 591 South Dowling Street, Surry Hills, NSW, 2010, Australia.
- Drug and Alcohol Services, South East Sydney Local Health District, Sydney, NSW, Australia.
- Drug and Alcohol Clinical Research and Improvement Network (DACRIN), Sydney, NSW, Australia.
| | - Jonathon C Arnold
- Lambert Initiative for Cannabinoid Therapeutics, The University of Sydney, Sydney, NSW, Australia
| | - Anastasia Suraev
- Lambert Initiative for Cannabinoid Therapeutics, The University of Sydney, Sydney, NSW, Australia
- Faculty of Science, School of Psychology, The University of Sydney, Sydney, NSW, Australia
- Brain and Mind Centre, The University of Sydney, Sydney, NSW, Australia
| | - Sarah V Abelev
- Lambert Initiative for Cannabinoid Therapeutics, The University of Sydney, Sydney, NSW, Australia
| | - Cilla Zhou
- Lambert Initiative for Cannabinoid Therapeutics, The University of Sydney, Sydney, NSW, Australia
| | - Thomas R Arkell
- Centre for Human Psychopharmacology, Swinburne University of Technology, Hawthorn, VIC, Australia
| | - Iain S McGregor
- Lambert Initiative for Cannabinoid Therapeutics, The University of Sydney, Sydney, NSW, Australia
- Faculty of Science, School of Psychology, The University of Sydney, Sydney, NSW, Australia
- Brain and Mind Centre, The University of Sydney, Sydney, NSW, Australia
| | - Nicholas Lintzeris
- Specialty of Addiction Medicine, Faculty Medicine and Health, University of Sydney, 591 South Dowling Street, Surry Hills, NSW, 2010, Australia
- Drug and Alcohol Services, South East Sydney Local Health District, Sydney, NSW, Australia
- Drug and Alcohol Clinical Research and Improvement Network (DACRIN), Sydney, NSW, Australia
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Mosandl CF, Baltes-Flückiger L, Kronschnabel J, Meyer M, Guessoum A, Herrmann O, Vogel M, Walter M, Pichler EM. Cannabis use and its association with psychopathological symptoms in a Swiss adult population: a cross-sectional analysis. Front Public Health 2024; 12:1356988. [PMID: 38841675 PMCID: PMC11151851 DOI: 10.3389/fpubh.2024.1356988] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Accepted: 05/10/2024] [Indexed: 06/07/2024] Open
Abstract
Background As the most commonly used illicit substance, cannabis is gaining global acceptance through increasing legalization efforts. This shift intensifies the need for research to guide policymakers and healthcare providers in harm reduction and treatment strategies. Nonetheless, the relationship between psychopathological symptoms and cannabis use remains inadequately understood. Methods A sample of regular cannabis consumers completed self-reported assessments for depression (Patient Health Questionnaire-9), anxiety (General Anxiety Disorder-7), Attention-Deficit/Hyperactivity Disorder (ADHD; Adult ADHD Self-Report Scale V1.1), and psychosis (Early Recognition Inventory based on IRAOS) as well as previous black-market cannabis use patterns. Cannabis Use Disorder Identification Test Revised (CUDIT-R) was used to identify cannabis use disorder (CUD). To understand psychopathological symptom load related to cannabis consumption as well as cannabis use motives, multiple regression models were performed to identify psychopathological variables predicting cannabis use frequency and quantity. Linear regression and correlation analyses were conducted, adjusting for relevant covariates (age, gender, education, alcohol, other substance use). Results Three-hundred-sixty regular cannabis users interested in a study on regulated cannabis access in Basel, Switzerland were examined. In bivariate analysis, cannabis use frequency correlated with depressive (r(358) = 0.16, p = 0.003) and anxiety symptom load (r(358) = 0.11, p = 0.034). Cannabis quantity correlated with depressive (r(358) = 0.15, p = 0.005), ADHD (r(358) = 0.14, p = 0.008), and psychosis symptom load (r(358) = 0.16, p = 0.002). However, in the adjusted regression models only depressive and ADHD symptom loads were significantly associated with cannabis use frequency (p = 0.006 and p = 0.034, respectively) and quantity (p = 0.037 and p = 0.019, respectively). No significant correlations between cannabis consumption and anxiety or psychosis remained after adjustment. Conclusion ADHD and depressive symptoms correlate with increased cannabis use in a cohort of regular users, suggesting potential self-medication in nonclinical populations. With the rising availability of cannabis worldwide, these results highlight the necessity for longitudinal studies to disentangle the complex dynamics between cannabis consumption and mental health symptoms.
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Affiliation(s)
- Christoph Felix Mosandl
- Clinic of Psychiatry and Psychotherapy, Psychiatric Services Aargau, Windisch, Switzerland
- Department of Addictive Disorders, University Psychiatric Clinics Basel, Basel, Switzerland
| | | | - Jens Kronschnabel
- Clinic of Psychiatry and Psychotherapy, Psychiatric Services Aargau, Windisch, Switzerland
| | - Maximilian Meyer
- Department of Addictive Disorders, University Psychiatric Clinics Basel, Basel, Switzerland
| | - Adrian Guessoum
- Department of Addictive Disorders, University Psychiatric Clinics Basel, Basel, Switzerland
| | - Oliver Herrmann
- Department of Addictive Disorders, University Psychiatric Clinics Basel, Basel, Switzerland
| | - Marc Vogel
- Department of Addictive Disorders, University Psychiatric Clinics Basel, Basel, Switzerland
| | - Marc Walter
- Clinic of Psychiatry and Psychotherapy, Psychiatric Services Aargau, Windisch, Switzerland
| | - Eva-Maria Pichler
- Clinic of Psychiatry and Psychotherapy, Psychiatric Services Aargau, Windisch, Switzerland
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Shustorovich A, Corroon J, Wallace MS, Sexton M. Biphasic effects of cannabis and cannabinoid therapy on pain severity, anxiety, and sleep disturbance: a scoping review. PAIN MEDICINE (MALDEN, MASS.) 2024; 25:387-399. [PMID: 38268491 DOI: 10.1093/pm/pnae004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 12/17/2023] [Accepted: 01/11/2024] [Indexed: 01/26/2024]
Abstract
INTRODUCTION Cannabinoids are being used by patients to help with chronic pain management and to address the 2 primary chronic pain comorbidities of anxiety and sleep disturbance. It is necessary to understand the biphasic effects of cannabinoids to improve treatment of this symptom triad. METHODS A scoping review was conducted to identify whether biphasic effects of cannabinoids on pain severity, anxiolysis, and sleep disturbance have been reported. The search included the Embase, Biosis, and Medline databases of clinical literature published between 1970 and 2021. The inclusion criteria were (1) adults more than 18 years of age, (2) data or discussion of dose effects associated with U-shaped or linear dose responses, and (3) measurements of pain and/or anxiety and/or sleep disturbance. Data were extracted by 2 independent reviewers (with a third reviewer used as a tiebreaker) and subjected to a thematic analysis. RESULTS After the database search and study eligibility assessment, 44 publications met the final criteria for review. Eighteen publications that specifically provided information on dose response were included in the final synthesis: 9 related to pain outcomes, 7 measuring anxiety, and 2 reporting sleep effects. CONCLUSIONS This scoping review reports on biphasic effects of cannabinoids related to pain, sleep, and anxiety. Dose-response relationships are present, but we found gaps in the current literature with regard to biphasic effects of cannabinoids in humans. There is a lack of prospective research in humans exploring this specific relationship.
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Affiliation(s)
- Alexander Shustorovich
- Department of Physical Medicine & Rehabilitation, JFK Johnson Rehabilitation Institute, Edison, NJ 08820, United States
| | - Jamie Corroon
- Department of Family Medicine, University of California, San Diego, San Diego, CA 92093, United States
| | - Mark S Wallace
- Department of Anesthesiology, University of California, San Diego Medical Center, San Diego, CA 92037, United States
| | - Michelle Sexton
- Department of Family Medicine, Centers for Integrative Health, University of California, San Diego, San Diego, CA 92093, United States
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Das A, Hendershot CS, Husain MI, Knyahnytska Y, Elsaid S, Le Foll B, Kloiber S. Perceptions, Experiences, and Patterns of Cannabis Use in Individuals with Mood and Anxiety Disorders in the Context of Cannabis Legalization and Medical Cannabis Program in Canada - A Qualitative Study. PHARMACOPSYCHIATRY 2024; 57:141-151. [PMID: 38467156 DOI: 10.1055/a-2264-1047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/13/2024]
Abstract
INTRODUCTION Perceptions of cannabis as a potential medical treatment for mood and anxiety disorders have been increasing in the context of legalizations, availability, and medical cannabis programs, though current evidence predominately indicates risks and negative effects of cannabis use (CU) on mental health outcomes. This study aims to understand motivations, perceptions, effects, and patterns of CU in individuals with mood and anxiety disorders. METHODS Thirty-six adult patients diagnosed with mood or anxiety disorders, obsessive-compulsive disorder, or posttraumatic stress disorder who were currently using cannabis completed an in-depth qualitative interview on individual motivations, perceptions, experiences, effects, and patterns of their CU. The thematic analysis focused on phases of CU and sources of cannabis products and information. RESULTS Reported motivations for initiation of CU included curiosity, peer pressure, and dissatisfaction with conventional treatments. Factors such as psychotropic effects and coping with mental health symptoms and insomnia contributed to the continuation of CU. More negative effects, including cognitive dysfunction, worsening of mood, and anxiety symptoms, were acknowledged with ongoing CU. Concerning findings included common initiation of CU before age 18, combined medical and recreational CU, rare consultation of medical professionals on CU, and potential effects and harms. DISCUSSION Findings indicate individual complexity of motivations, perceptions, and patterns of CU in the study population. The reported potential beneficial effects of specific cannabis products should be further investigated. Findings emphasize patient-provider dialogue on both CU and conventional treatments. Information from this study can contribute to and inform the development of education, prevention, and intervention strategies.
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Affiliation(s)
- Ankita Das
- Institute of Medical Sciences, University of Toronto, Toronto, Canada
- Centre for Addiction and Mental Health, Toronto, Canada
| | - Christian S Hendershot
- Department of Psychiatry and Bowles Center for Alcohol Studies, University of North Carolina at Chapel Hill, NC, USA
| | - M Ishrat Husain
- Institute of Medical Sciences, University of Toronto, Toronto, Canada
- Department of Psychiatry, University of Toronto, Toronto, Canada
- Centre for Addiction and Mental Health, Toronto, Canada
- Department of Pharmacology and Toxicology, University of Toronto, Toronto, Canada
- Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Canada
| | - Yuliya Knyahnytska
- Department of Psychiatry, University of Toronto, Toronto, Canada
- Centre for Addiction and Mental Health, Toronto, Canada
| | - Sonja Elsaid
- Institute of Medical Sciences, University of Toronto, Toronto, Canada
- Centre for Addiction and Mental Health, Toronto, Canada
| | - Bernard Le Foll
- Institute of Medical Sciences, University of Toronto, Toronto, Canada
- Department of Psychiatry, University of Toronto, Toronto, Canada
- Centre for Addiction and Mental Health, Toronto, Canada
- Department of Pharmacology and Toxicology, University of Toronto, Toronto, Canada
- Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Canada
- Department of Family and Community Medicine, University of Toronto, Toronto, Canada
- Waypoint Research Institute, Waypoint Centre for Mental Health Care, Penetanguishene, Canada
| | - Stefan Kloiber
- Institute of Medical Sciences, University of Toronto, Toronto, Canada
- Department of Psychiatry, University of Toronto, Toronto, Canada
- Centre for Addiction and Mental Health, Toronto, Canada
- Department of Pharmacology and Toxicology, University of Toronto, Toronto, Canada
- Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Canada
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10
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Müller-Vahl KR. Cannabinoids in the Treatment of Selected Mental Illnesses: Practical Approach and Overview of the Literature. PHARMACOPSYCHIATRY 2024; 57:104-114. [PMID: 38428836 PMCID: PMC11076106 DOI: 10.1055/a-2256-0098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2023] [Accepted: 01/17/2024] [Indexed: 03/03/2024]
Abstract
Although an increasing number of patients suffering from mental illnesses self-medicate with cannabis, current knowledge about the efficacy and safety of cannabis-based medicine in psychiatry is still extremely limited. So far, no cannabis-based finished product has been approved for the treatment of a mental illness. There is increasing evidence that cannabinoids may improve symptoms in autism spectrum disorder (ASD), Tourette syndrome (TS), anxiety disorders, and post-traumatic stress disorder (PTSD). According to surveys, patients often use cannabinoids to improve mood, sleep, and symptoms of attention deficit/hyperactivity disorder (ADHD). There is evidence suggesting that tetrahydrocannabinol (THC) and THC-containing cannabis extracts, such as nabiximols, can be used as substitutes in patients with cannabis use disorder.Preliminary evidence also suggests an involvement of the endocannabinoid system (ECS) in the pathophysiology of TS, ADHD, and PTSD. Since the ECS is the most important neuromodulatory system in the brain, it possibly induces beneficial effects of cannabinoids by alterations in other neurotransmitter systems. Finally, the ECS is an important stress management system. Thus, cannabinoids may improve symptoms in patients with mental illnesses by reducing stress.Practically, cannabis-based treatment in patients with psychiatric disorders does not differ from other indications. The starting dose of THC-containing products should be low (1-2.5 mg THC/day), and the dose should be up-titrated slowly (by 1-2.5 mg every 3-5 days). The average daily dose is 10-20 mg THC. In contrast, cannabidiol (CBD) is mainly used in high doses>400 mg/day.
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Affiliation(s)
- Kirsten R. Müller-Vahl
- Clinic of Psychiatry, Socialpsychiatry and Psychotherapy, Hannover
Medical School, Hannover, Germany
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11
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Laliberte MM, Belisario K, Lucibello KM, Potechin MB, Potter S, Brassard S, Punia K, MacKillop J, Balodis I. Changing cannabis legislation in Canada and a longitudinal look at "regular" cannabis use in patients with eating disorders. Psychiatry Res 2024; 337:115933. [PMID: 38759416 DOI: 10.1016/j.psychres.2024.115933] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/05/2023] [Revised: 04/25/2024] [Accepted: 04/26/2024] [Indexed: 05/19/2024]
Abstract
Regular cannabis use (CU), defined as "weekly or more often", is associated with a number of negative mental health outcomes. In the last decade, Canada legalized first medical and then recreational CU. Despite higher prevalence in mental health populations, little research has documented changes in frequency of CU with progressive legalization of cannabis. This study examined rates of CU in a sample of 843 treatment-seeking patients with eating disorders (ED) in an outpatient setting between 2004 and 2020. Across ED diagnoses, segmented regression indicated a significant break-point in regular CU in 2014, commensurate with the relaxation of medical cannabis laws. Regular CU increased from 4.9 % to 23.7 % from 2014 to 2020; well above the stable 6 % found in the general population. No significant break-point was observed in either alcohol or illicit substance use over the same time period. Significant increases in regular CU were found in patients with anorexia nervosa and binge eating disorder, while regular use remained stable in patients with bulimia nervosa. Comorbid psychiatric diagnoses did not increase odds of regular CU. Findings suggest certain patient groups with mental illness may be at risk of engaging in high frequency use in the context of legislation implying medical benefits of cannabis.
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Affiliation(s)
- Michele M Laliberte
- Peter Boris Centre for Addictions Research, St. Joseph's Healthcare Hamilton, Hamilton, Ontario, Canada; Department of Psychiatry and Behavioural Neurosciences, McMaster University, Hamilton, Ontario, Canada; Eating Disorders Clinic, St. Joseph's Healthcare Hamilton, Hamilton, Ontario, Canada; Department of Psychology, Neuroscience, & Behaviour, McMaster University, Hamilton, Ontario, Canada
| | - Kyla Belisario
- Peter Boris Centre for Addictions Research, St. Joseph's Healthcare Hamilton, Hamilton, Ontario, Canada; Department of Psychiatry and Behavioural Neurosciences, McMaster University, Hamilton, Ontario, Canada
| | - Kristen M Lucibello
- Department of Health Sciences, Brock University, St. Catharines, Ontario, Canada
| | | | - Sarah Potter
- Eating Disorders Clinic, St. Joseph's Healthcare Hamilton, Hamilton, Ontario, Canada; Department of Psychology, Neuroscience, & Behaviour, McMaster University, Hamilton, Ontario, Canada
| | - Sarah Brassard
- Peter Boris Centre for Addictions Research, St. Joseph's Healthcare Hamilton, Hamilton, Ontario, Canada; Department of Psychiatry and Behavioural Neurosciences, McMaster University, Hamilton, Ontario, Canada
| | - Kiran Punia
- Peter Boris Centre for Addictions Research, St. Joseph's Healthcare Hamilton, Hamilton, Ontario, Canada; Department of Psychology, Neuroscience, & Behaviour, McMaster University, Hamilton, Ontario, Canada
| | - James MacKillop
- Peter Boris Centre for Addictions Research, St. Joseph's Healthcare Hamilton, Hamilton, Ontario, Canada; Department of Psychiatry and Behavioural Neurosciences, McMaster University, Hamilton, Ontario, Canada; Michael G. DeGroote Centre for Medicinal Cannabis Research, Hamilton, Ontario, Canada
| | - Iris Balodis
- Peter Boris Centre for Addictions Research, St. Joseph's Healthcare Hamilton, Hamilton, Ontario, Canada; Department of Psychiatry and Behavioural Neurosciences, McMaster University, Hamilton, Ontario, Canada; Michael G. DeGroote Centre for Medicinal Cannabis Research, Hamilton, Ontario, Canada.
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12
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Xu Y, Li X, Xu P, Yan F, Wang D. Comparative pharmacokinetic and intracerebral distribution of MDMB-4F-BICA in mice following inhalation ('vapor') and subcutaneous injection. J Pharm Biomed Anal 2024; 241:115988. [PMID: 38301574 DOI: 10.1016/j.jpba.2024.115988] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Revised: 01/15/2024] [Accepted: 01/16/2024] [Indexed: 02/03/2024]
Abstract
MDMB-4F-BICA, also known as 4F-MDMB-BICA, is a new psychoactive substance that emerged in 2020. It is often illegally added to electronic cigarette oil for inhalation abuse, leading to serious adverse symptoms and even death. There are significant differences in pharmacokinetics between inhalation administration and conventional drug delivery methods. Inhalation administration can pass through the blood-brain barrier to enter the brain directly. However, the specific distribution of the drug in the brain following inhalation has not been well investigated. In order to scientifically compare the absorption and distribution of MDMB-4F-BICA after two administration methods (inhalation and subcutaneous injection), this study analyzed the drug concentration in mice blood and brain by LC-MS/MS after systemic exposure inhalation in the form of electronic cigarettes. The aim was to conduct the pharmacokinetics study of MDMB-4F-BICA after inhalation('vapor') administration. Pharmacokinetics and distribution of the compound revealed that the maximum concentrations in blood of this compound were reached at 0.5 min and 15 min, respectively, and the concentration in the brain reached the maximum at the same time after two modes of administration. The drug concentration in the brain was higher than that of subcutaneous injection, and the drug remained at a low concentration in the brain for a long period (20 ng/g brain tissue) with a significant distribution in several olfactory primary cortex brain regions. Taken together, the pharmacokinetics of the synthetic cannabinoid MDMB-4F-BICA after single systemic exposure inhalation were investigated for the first time in this study. A basis for subsequent evaluation research of inhalation-related harmfulness is provided by comparing the distribution of drugs in the brain after the two administration modes.
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Affiliation(s)
- Yawen Xu
- School of Pharmacy, China Pharmaceutical University, Nanjing 210009, China; Office of China National Narcotics Control Commission, China Pharmaceutical University Joint Laboratory on Key Technologies of Narcotics Control, Beijing 100193, China
| | - Xiangyu Li
- Key Laboratory of Drug Monitoring and Control, Drug Intelligence and Forensic Center, Ministry of Public Security, Beijing 100193, China; Office of China National Narcotics Control Commission, China Pharmaceutical University Joint Laboratory on Key Technologies of Narcotics Control, Beijing 100193, China
| | - Peng Xu
- School of Pharmacy, China Pharmaceutical University, Nanjing 210009, China; Key Laboratory of Drug Monitoring and Control, Drug Intelligence and Forensic Center, Ministry of Public Security, Beijing 100193, China; Office of China National Narcotics Control Commission, China Pharmaceutical University Joint Laboratory on Key Technologies of Narcotics Control, Beijing 100193, China
| | - Fang Yan
- School of Pharmacy, China Pharmaceutical University, Nanjing 210009, China; Office of China National Narcotics Control Commission, China Pharmaceutical University Joint Laboratory on Key Technologies of Narcotics Control, Beijing 100193, China.
| | - Dan Wang
- Key Laboratory of Drug Monitoring and Control, Drug Intelligence and Forensic Center, Ministry of Public Security, Beijing 100193, China; Office of China National Narcotics Control Commission, China Pharmaceutical University Joint Laboratory on Key Technologies of Narcotics Control, Beijing 100193, China.
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13
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Wallez S, Kousignian I, Hecker I, Rezag Bara SF, Andersen AJ, Melchior M, Cadwallader JS, Mary-Krause M. Factors associated with the use of cannabis for self-medication by adults: data from the French TEMPO cohort study. J Cannabis Res 2024; 6:19. [PMID: 38600591 PMCID: PMC11005193 DOI: 10.1186/s42238-024-00230-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Accepted: 03/26/2024] [Indexed: 04/12/2024] Open
Abstract
BACKGROUND Medical cannabis, legalized in many countries, remains illegal in France. Despite an experiment in the medical use of cannabis that began in March 2021 in France, little is known about the factors associated with the use of cannabis for self-medication among adults. METHODS Data came from the French TEMPO cohort and were collected between December 2020 and May 2021. Overall, 345 participants aged 27-47 were included. Cannabis for self-medication was defined using the following questions: 'Why do you use cannabis?' and 'In what form do you use cannabis?'. The penalized regression method "Elastic net" was used to determine factors associated with the use of cannabis for self-medication, with the hypothesis that it is mainly used for pain in individuals who have already used cannabis. RESULTS More than half of the participants reported having ever used cannabis (58%). Only 10% used it for self-declared medical reasons (n = 36). All self-medication cannabis users, except one, were also using cannabis for recreational purposes. The main factors associated with cannabis use for self-medication vs. other reasons included cannabis use trajectories, the presence of musculoskeletal disorders, tobacco smoking, and parental divorce. CONCLUSIONS Engaging in cannabis use during adolescence or early adulthood may increase the likelihood of resorting to self-medication in adulthood. Due to the propensity of individuals with cannabis use during adolescence to resort to uncontrolled products for self-medication, this population should be more systematically targeted and screened for symptoms and comorbidities that may be associated with cannabis use.
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Affiliation(s)
- Solène Wallez
- Sorbonne Université, INSERM, Institut Pierre Louis d'Epidémiologie et de Santé Publique, IPLESP, Equipe de Recherche en Epidémiologie Sociale, ERES, Paris, 75012, France
| | - Isabelle Kousignian
- Université Paris Cité, Unité de Recherche « Biostatistique, Traitement Et Modélisation Des Données Biologiques » BioSTM - UR 7537, 75006, Paris, France
| | - Irwin Hecker
- Sorbonne Université, INSERM, Institut Pierre Louis d'Epidémiologie et de Santé Publique, IPLESP, Equipe de Recherche en Epidémiologie Sociale, ERES, Paris, 75012, France
| | - Selma Faten Rezag Bara
- Sorbonne Université, INSERM, Institut Pierre Louis d'Epidémiologie et de Santé Publique, IPLESP, Equipe de Recherche en Epidémiologie Sociale, ERES, Paris, 75012, France
| | - Astrid Juhl Andersen
- Sorbonne Université, INSERM, Institut Pierre Louis d'Epidémiologie et de Santé Publique, IPLESP, Equipe de Recherche en Epidémiologie Sociale, ERES, Paris, 75012, France
| | - Maria Melchior
- Sorbonne Université, INSERM, Institut Pierre Louis d'Epidémiologie et de Santé Publique, IPLESP, Equipe de Recherche en Epidémiologie Sociale, ERES, Paris, 75012, France
| | - Jean-Sébastien Cadwallader
- Sorbonne Université, INSERM, Institut Pierre Louis d'Epidémiologie et de Santé Publique, IPLESP, Equipe de Recherche en Epidémiologie Sociale, ERES, Paris, 75012, France
- Sorbonne Université, Faculté de Médecine Saint-Antoine, Département de Médecine Générale, Paris, 75012, France
| | - Murielle Mary-Krause
- Sorbonne Université, INSERM, Institut Pierre Louis d'Epidémiologie et de Santé Publique, IPLESP, Equipe de Recherche en Epidémiologie Sociale, ERES, Paris, 75012, France.
- Sorbonne Université - Faculté de Médecine, Site Saint-Antoine, UMR-S 1136 - N° BC 2908, Équipe Cohorte TEMPO, 27 Rue Chaligny, 75012, Paris, France.
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14
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Mohammed SYM, Leis K, Mercado RE, Castillo MMS, Miranda KJ, Carandang RR. Effectiveness of Cannabidiol to Manage Chronic Pain: A Systematic Review. Pain Manag Nurs 2024; 25:e76-e86. [PMID: 37953193 DOI: 10.1016/j.pmn.2023.10.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 10/03/2023] [Accepted: 10/13/2023] [Indexed: 11/14/2023]
Abstract
OBJECTIVES Cannabidiol (CBD), a component in Cannabis, is used to treat seizures, anxiety, and pain. Little is known about how effectively CBD works in managing chronic pain, a condition characterized by discomfort that persists beyond 3-6 months or beyond expected normal healing. Therefore, this systematic review aimed to synthesize evidence on the effectiveness of CBD in chronic pain management. DESIGN A systematic review of literature utilizing PRISMA 2020 guidelines. DATA SOURCES PubMed/MEDLINE, Web of Science, CINAHL, Academic Search Complete, PsycArticles, PsycINFO, SocINDEX, and CENTRAL. The gray literature search was performed through the World Health Organization, the Centers for Disease Control and Prevention, and the European Centre for Disease Prevention and Control. REVIEW/ANALYSIS METHODS We searched eight databases and gray literature for relevant studies until August 30, 2022. We gathered original research articles with various study designs published in English that looked at patients who used CBD to manage their chronic pain. Two authors assessed the risk of bias and certainty of evidence using the Grading of Recommendations Assessment, Development, and Evaluation approach. We used narrative synthesis to analyze the results. RESULTS We included 15 studies among 1,516 identified articles. The majority of the studies indicated pain reduction ranging from 42% - 66% with CBD alone and CBD with Tetrahydrocannabinol. Three studies showed no significant improvement in reducing pain, and one had mixed findings in pain control. The included studies had various methods of measuring pain reduction, mostly through self-reporting and scales such as visual analog scales and verbal numerical scales, among others. CONCLUSION CBD may be useful in treating chronic pain. Findings should be interpreted with caution due to the small number of included studies and heterogeneity brought about by different study designs and outcome measures. More studies with robust study designs are warranted to evaluate CBD's effectiveness in treating chronic pain.
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Affiliation(s)
| | - Kaizielyn Leis
- College of Pharmacy, Adamson University, Ermita, Manila, Philippines
| | | | | | | | - Rogie Royce Carandang
- College of Pharmacy, Adamson University, Ermita, Manila, Philippines; Department of Public Health Sciences, University of Connecticut School of Medicine, Farmington, CT.
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15
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Starkey B, Pearlson GD, Bond D, Glaser C, Bhargava A, Grosberg BM, Verhaak A. Characterizing Cannabis Use and Perceived Benefit in a Tertiary Headache Center Patient Sample. Neurol Clin Pract 2024; 14:e200285. [PMID: 38455123 PMCID: PMC10915819 DOI: 10.1212/cpj.0000000000200285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Accepted: 01/22/2024] [Indexed: 03/09/2024]
Abstract
Background and Objectives Research suggests a potential role for cannabinoids in the etiology and treatment of migraine. However, there is a paucity of research on usage patterns and perceived benefits of cannabis use in clinical headache patient populations. Methods Patients from a tertiary headache center completed a 1-time online survey regarding cannabis use patterns and perceived benefits of cannabis-based products in treating migraine symptoms, clinical features, and risk factors (e.g., depression, sleep disturbance). Descriptive analyses were performed. Results Data were collected from 1373 patients (response rate 25.4% [1,373/5,400]), with 55.7% reporting cannabis-based product use in the past 3 years and 32.5% indicating current use. The most frequently cited reasons for cannabis-based product use were treating headache (65.8%) and sleep concerns (50.8%). Inhaled products (i.e., smoked/vaped) and edibles were the most commonly reported delivery methods, with THC/CBD (∆9 tetrahydrocannabinol/cannabidiol) blends as the most-cited product composition. A majority of participants reported cannabis-related improvements in migraine headache characteristics (i.e., intensity: 78.1%; duration: 73.4%; frequency: 62.4%), nausea (56.3%), and risk factors (sleep disturbance: 81.2%; anxiety: 71.4%; depression: 57.0%). Over half (58.0%) of the respondents reported only using cannabis products when experiencing a headache, while 42.0% used cannabis most days/daily for prevention. Nearly half (48.9%) of the respondents reported that cannabis use contributed to a reduction in medication amount for headache treatment, and 14.5% reported an elimination of other medications. A minority (20.9%) of participants reported experiencing side effects when using cannabis products for headache, most commonly fatigue/lethargy. For those participants who reported no use of cannabis-based products in the previous 3 years, approximately half indicated not knowing what cannabis product to take or the appropriate dosage. Discussion This is the largest study to date to document cannabis product usage patterns and perceived benefits for migraine management in a clinical headache patient sample. A majority of patients surveyed reported using cannabis products for migraine management and cited perceived improvements in migraine characteristics, clinical features, and associated risk factors. The findings warrant experimental trials to confirm the perceived benefits of cannabis products for migraine prevention and treatment.
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Affiliation(s)
- Brianna Starkey
- Hartford HealthCare Headache Center (BS, CG, AB, BMG, AV), Ayer Neuroscience Institute, West Hartford; Olin Neuropsychiatric Research Center (GDP), Institute of Living, Hartford; Department of Psychiatry and Neuroscience (GDP), Yale School of Medicine, New Haven; Department of Research (DB), Hartford Hospital/Hartford HealthCare; Department of Neurology (BMG, AV), University of Connecticut School of Medicine, Farmington; and Division of Health Psychology (AV), The Institute of Living/Hartford Hospital, CT
| | - Godfrey D Pearlson
- Hartford HealthCare Headache Center (BS, CG, AB, BMG, AV), Ayer Neuroscience Institute, West Hartford; Olin Neuropsychiatric Research Center (GDP), Institute of Living, Hartford; Department of Psychiatry and Neuroscience (GDP), Yale School of Medicine, New Haven; Department of Research (DB), Hartford Hospital/Hartford HealthCare; Department of Neurology (BMG, AV), University of Connecticut School of Medicine, Farmington; and Division of Health Psychology (AV), The Institute of Living/Hartford Hospital, CT
| | - Dale Bond
- Hartford HealthCare Headache Center (BS, CG, AB, BMG, AV), Ayer Neuroscience Institute, West Hartford; Olin Neuropsychiatric Research Center (GDP), Institute of Living, Hartford; Department of Psychiatry and Neuroscience (GDP), Yale School of Medicine, New Haven; Department of Research (DB), Hartford Hospital/Hartford HealthCare; Department of Neurology (BMG, AV), University of Connecticut School of Medicine, Farmington; and Division of Health Psychology (AV), The Institute of Living/Hartford Hospital, CT
| | - Cathy Glaser
- Hartford HealthCare Headache Center (BS, CG, AB, BMG, AV), Ayer Neuroscience Institute, West Hartford; Olin Neuropsychiatric Research Center (GDP), Institute of Living, Hartford; Department of Psychiatry and Neuroscience (GDP), Yale School of Medicine, New Haven; Department of Research (DB), Hartford Hospital/Hartford HealthCare; Department of Neurology (BMG, AV), University of Connecticut School of Medicine, Farmington; and Division of Health Psychology (AV), The Institute of Living/Hartford Hospital, CT
| | - Aakash Bhargava
- Hartford HealthCare Headache Center (BS, CG, AB, BMG, AV), Ayer Neuroscience Institute, West Hartford; Olin Neuropsychiatric Research Center (GDP), Institute of Living, Hartford; Department of Psychiatry and Neuroscience (GDP), Yale School of Medicine, New Haven; Department of Research (DB), Hartford Hospital/Hartford HealthCare; Department of Neurology (BMG, AV), University of Connecticut School of Medicine, Farmington; and Division of Health Psychology (AV), The Institute of Living/Hartford Hospital, CT
| | - Brian M Grosberg
- Hartford HealthCare Headache Center (BS, CG, AB, BMG, AV), Ayer Neuroscience Institute, West Hartford; Olin Neuropsychiatric Research Center (GDP), Institute of Living, Hartford; Department of Psychiatry and Neuroscience (GDP), Yale School of Medicine, New Haven; Department of Research (DB), Hartford Hospital/Hartford HealthCare; Department of Neurology (BMG, AV), University of Connecticut School of Medicine, Farmington; and Division of Health Psychology (AV), The Institute of Living/Hartford Hospital, CT
| | - Allison Verhaak
- Hartford HealthCare Headache Center (BS, CG, AB, BMG, AV), Ayer Neuroscience Institute, West Hartford; Olin Neuropsychiatric Research Center (GDP), Institute of Living, Hartford; Department of Psychiatry and Neuroscience (GDP), Yale School of Medicine, New Haven; Department of Research (DB), Hartford Hospital/Hartford HealthCare; Department of Neurology (BMG, AV), University of Connecticut School of Medicine, Farmington; and Division of Health Psychology (AV), The Institute of Living/Hartford Hospital, CT
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16
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Coates S, Bardhi K, Lazarus P. Cannabinoid-Induced Inhibition of Morphine Glucuronidation and the Potential for In Vivo Drug-Drug Interactions. Pharmaceutics 2024; 16:418. [PMID: 38543313 PMCID: PMC10975434 DOI: 10.3390/pharmaceutics16030418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2024] [Revised: 03/12/2024] [Accepted: 03/13/2024] [Indexed: 04/01/2024] Open
Abstract
Opioids are commonly prescribed for the treatment of chronic pain. Approximately 50% of adults who are prescribed opioids for pain co-use cannabis with their opioid treatment. Morphine is primarily metabolized by UDP-glucuronosyltransferase (UGT) 2B7 to an inactive metabolite, morphine-3-glucuronide (M3G), and an active metabolite, morphine-6-glucuronide (M6G). Previous studies have shown that major cannabis constituents including Δ9-tetrahydrocannabinol (THC) and cannabidiol (CBD) inhibit major UGT enzymes. To examine whether cannabinoids or their major metabolites inhibit morphine glucuronidation by UGT2B7, in vitro assays and mechanistic static modeling were performed with these cannabinoids and their major metabolites including 11-hydroxy-Δ9-tetrahydrocannabinol (11-OH-THC), 11-nor-9-carboxy-Δ9-tetrahydrocannabinol (11-COOH-THC), 7-hydroxy-cannabidiol (7-OH-CBD), and 7-carboxy-cannabidiol (7-COOH-CBD). In vitro assays with rUGT-overexpressing microsomes and human liver microsomes showed that THC and CBD and their metabolites inhibited UGT2B7-mediated morphine metabolism, with CBD and THC exhibiting the most potent Ki,u values (0.16 µM and 0.37 µM, respectively). Only 7-COOH-CBD exhibited no inhibitory activity against UGT2B7-mediated morphine metabolism. Static mechanistic modeling predicted an in vivo drug-drug interaction between morphine and THC after inhaled cannabis, and between THC, CBD, and 7-OH-CBD after oral consumption of cannabis. These data suggest that the co-use of these agents may lead to adverse drug events in humans.
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Affiliation(s)
| | | | - Philip Lazarus
- Department of Pharmaceutical Sciences, College of Pharmacy and Pharmaceutical Sciences, Washington State University, 412 E. Spokane Falls Blvd, Spokane, WA 99202, USA
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17
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Adley NC, Brasky TM, Conroy SR, Newton AM, Plascak JJ, Strassels SA, Hays JL, Krok-Schoen JL. Associations of Cancer Patients' Demographic and Clinical Characteristics With Cannabis-Related Interest and Behaviors. J Palliat Med 2024; 27:394-399. [PMID: 38157334 DOI: 10.1089/jpm.2023.0490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2024] Open
Abstract
Background: Cannabis interest and use is increasing in the United States, yet research on its use among cancer patients is limited. Methods: Individuals with cancer completed an anonymous cross-sectional questionnaire. Multivariable logistic regressions estimated odds ratios (OR) between patients' demographic and clinical characteristics with cannabis-related interest, current use, and provider recommendation. Results: Participants (n = 943) were, on average, 61.7 years old. Older patients were less likely to use cannabis products (OR = 0.42, confidence interval [95% CI]: 0.26-0.69) and less likely to be interested in cannabis (OR = 0.60, 95% CI: 0.44-0.84) than younger patients. Those with higher education were less likely to be using cannabis (OR = 0.41, 95% CI: 0.25-0.67) and less likely to have received a provider recommendation of cannabis use than the least educated (OR = 0.38, 95% CI: 0.19-0.76). Cancer spread and type were significant correlates of provider recommendation of cannabis use. Conclusions: Additional research is warranted to better understand cancer patients' motivations for cannabis use and interest.
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Affiliation(s)
- Neema C Adley
- Department of Neuroscience, The Ohio State University College of Arts and Sciences, Columbus, Ohio, USA
| | - Theodore M Brasky
- Division of Medical Oncology, The Ohio State University College of Medicine, Columbus, Ohio, USA
| | - Sara R Conroy
- Department of Biomedical Informatics, Center for Biostatistics, The Ohio State University College of Medicine, Columbus, Ohio, USA
| | - Alison M Newton
- Division of Medical Oncology, The Ohio State University College of Medicine, Columbus, Ohio, USA
| | - Jesse J Plascak
- Division of Cancer Prevention and Control, The Ohio State University College of Medicine, Columbus, Ohio, USA
| | | | - John L Hays
- Division of Medical Oncology, The Ohio State University College of Medicine, Columbus, Ohio, USA
| | - Jessica L Krok-Schoen
- School of Health and Rehabilitation Sciences, The Ohio State University College of Medicine, Columbus, Ohio, USA
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18
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Schuster NM, Wallace MS, Marcotte TD, Buse DC, Lee E, Liu L, Sexton M. Vaporized Cannabis versus Placebo for Acute Migraine: A Randomized Controlled Trial. MEDRXIV : THE PREPRINT SERVER FOR HEALTH SCIENCES 2024:2024.02.16.24302843. [PMID: 38405890 PMCID: PMC10889030 DOI: 10.1101/2024.02.16.24302843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/27/2024]
Abstract
Background Preclinical and retrospective studies suggest cannabinoids may be effective in migraine treatment. However, there have been no randomized clinical trials examining the efficacy of cannabinoids for acute migraine. Methods In this randomized, double-blind, placebo-controlled, crossover trial, adults with migraine treated up to 4 separate migraine attacks, 1 each with vaporized 1) 6% Δ9-tetrahydrocannabinol (THC-dominant); 2) 11% cannabidiol (CBD-dominant); 3) 6% THC+11% CBD; and 4) placebo cannabis flower in a randomized order. Washout period between treated attack was ≥1 week. The primary endpoint was pain relief and secondary endpoints were pain freedom and most bothersome symptom (MBS) freedom, all assessed at 2 hours post-vaporization. Results Ninety-two participants were enrolled and randomized, and 247 migraine attacks were treated. THC+CBD was superior to placebo at achieving pain relief (67.2% vs 46.6%, Odds Ratio [95% Confidence Interval] 2.85 [1.22, 6.65], p=0.016), pain freedom (34.5% vs. 15.5%, 3.30 [1.24, 8.80], p=0.017) and MBS freedom (60.3% vs. 34.5%, 3.32 [1.45, 7.64], p=0.005) at 2 hours, as well as sustained pain freedom at 24 hours and sustained MBS freedom at 24 and 48 hours. THC-dominant was superior to placebo for pain relief (68.9% vs. 46.6%, 3.14 [1.35, 7.30], p=0.008) but not pain freedom or MBS freedom at 2 hours. CBD-dominant was not superior to placebo for pain relief, pain freedom or MBS freedom at 2 hours. There were no serious adverse events. Conclusions Acute migraine treatment with 6% THC+11% CBD was superior to placebo at 2 hours post-treatment with sustained benefits at 24 and 48 hours.
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Affiliation(s)
- Nathaniel M. Schuster
- Center for Pain Medicine, Department of Anesthesiology, University of California, San Diego Health System, San Diego, CA
- Center for Medicinal Cannabis Research, University of California, San Diego Health System, San Diego, CA
| | - Mark S. Wallace
- Center for Pain Medicine, Department of Anesthesiology, University of California, San Diego Health System, San Diego, CA
- Center for Medicinal Cannabis Research, University of California, San Diego Health System, San Diego, CA
| | - Thomas D. Marcotte
- Department of Psychiatry, University of California, San Diego Health System, San Diego, CA
- Center for Medicinal Cannabis Research, University of California, San Diego Health System, San Diego, CA
| | - Dawn C. Buse
- Department of Neurology, Albert Einstein College of Medicine
| | - Euyhyun Lee
- Altman Clinical and Translational Research Institute, University of California, San Diego Health System, San Diego, CA
| | - Lin Liu
- Department of Biostatistics and Bioinformatics, Herbert Wertheim School of Public Health and Human Longevity Science, University of California, San Diego Health System, San Diego, CA
| | - Michelle Sexton
- Centers for Integrative Health, Department of Family Medicine, University of California, San Diego Health System, San Diego, CA
- Center for Medicinal Cannabis Research, University of California, San Diego Health System, San Diego, CA
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19
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Smith CB, Schmidt J, Holdsworth EA, Caffé B, Brooks O, Williams JE, Gang DR, McGuire MA, McGuire MK, Barbosa-Leiker C, Meehan CL. Cannabis use, decision making, and perceptions of risk among breastfeeding individuals: the Lactation and Cannabis (LAC) Study. J Cannabis Res 2024; 6:6. [PMID: 38365778 PMCID: PMC10870434 DOI: 10.1186/s42238-023-00212-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Accepted: 12/13/2023] [Indexed: 02/18/2024] Open
Abstract
OBJECTIVE Our primary objective was to understand breastfeeding individuals' decisions to use cannabis. Specifically, we investigated reasons for cannabis use, experiences with healthcare providers regarding use, and potential concerns about cannabis use. METHODS We collected survey data from twenty breastfeeding participants from Washington and Oregon who used cannabis at least once weekly. We documented individuals' cannabis use and analyzed factors associated with their decisions to use cannabis during lactation. Qualitative description was used to assess responses to an open-ended question about potential concerns. RESULTS Fifty-five percent of participants (n = 11) reported using cannabis to treat or manage health conditions, mostly related to mental health. Eighty percent of participants (n = 16) reported very few or no concerns about using cannabis while breastfeeding, although participants who used cannabis for medical purposes had significantly more concerns. Most participants (n = 18, 90%) reported receiving either no or unhelpful advice from healthcare providers. Four themes arose through qualitative analysis, indicating that breastfeeding individuals are: 1) identifying research gaps and collecting evidence; 2) monitoring their child's health and development; 3) monitoring and titrating their cannabis use; and 4) comparing risks between cannabis and other controlled substances. CONCLUSIONS Breastfeeding individuals reported cannabis for medical and non-medical reasons and few had concerns about cannabis use during breastfeeding. Breastfeeding individuals reported using a variety of strategies and resources in their assessment of risk or lack thereof when deciding to use cannabis. Most participants reported receiving no helpful guidance from healthcare providers.
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Affiliation(s)
- Caroline B Smith
- Department of Anthropology, Washington State University, Pullman, WA, USA
| | - Jenna Schmidt
- Department of Anthropology, Washington State University, Pullman, WA, USA
| | | | - Beatrice Caffé
- Department of Anthropology, Washington State University, Pullman, WA, USA
| | - Olivia Brooks
- College of Nursing, Washington State University Health Sciences Spokane, Spokane, WA, USA
| | - Janet E Williams
- Department of Animal, Veterinary, and Food Sciences, University of Idaho, Moscow, ID, USA
| | - David R Gang
- Institute of Biological Chemistry, Washington State University, Pullman, WA, USA
| | - Mark A McGuire
- Department of Animal, Veterinary, and Food Sciences, University of Idaho, Moscow, ID, USA
| | - Michelle K McGuire
- Margaret Ritchie School of Family and Consumer Sciences, University of Idaho, Moscow, ID, USA
| | | | - Courtney L Meehan
- Department of Anthropology, Washington State University, Pullman, WA, USA.
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20
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King DD, Gill CJ, Cadieux CS, Singh N. The role of stigma in cannabis use disclosure: an exploratory study. Harm Reduct J 2024; 21:21. [PMID: 38273362 PMCID: PMC10811895 DOI: 10.1186/s12954-024-00929-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Accepted: 01/05/2024] [Indexed: 01/27/2024] Open
Abstract
BACKGROUND Although cannabis use incidence, societal acceptance, and legislation all trend positively, cannabis remains federally illegal in the USA. Prior studies have revealed that patients are reluctant to disclose their cannabis use history in the healthcare system, which can negatively impact patient care. This study reports the frequency of cannabis use disclosure with special considerations for stigmatization. To better understand the limitations, providers face in providing collaborative, comprehensive, and informed care, this study evaluated four domains of stigma: perceived, anticipated, enacted, and internalized. METHODS This study used a descriptive exploratory design. Data collection occurred using an anonymous, online national survey with a convenience sample in the USA. Recruitment relied on electronic media and occurred between July and December 2022. Participants were adults older than 21 years and self-identified as having used cannabis and accessed the healthcare system within the last five years. The survey measured demographic characteristics, cannabis use, and disclosure patterns. Stigma was measured using the Stigma Use Stigma Mechanism Scale (SU-SMS) and Substance Abuse Use Self-Stigma Scale (SASSS) with language modifications for cannabis. Ordinal logistic regression models were performed to evaluate associations between the frequency of cannabis use disclosure patterns and each stigma category. Associations were assessed using Chi-squared or Fisher's exact tests. RESULTS Data were available for 249 respondents. Most participants (57.1%) reported initiating a conversation about cannabis with their healthcare provider; 27.8% of the time, cannabis is never discussed, and healthcare providers initiate only 15.1% of related discussions. Anticipated stigma [95% CI 1.045-1.164] and total stigma [95% CI 1.001-1.039] had statistically significant associations with nondisclosure. Annual household income (p = .04), chronicity of cannabis use (p = .03), frequency of cannabis use (p = .02), and a known amount of CBD in products consumed (p = .01) had statistically significant associations with the frequency of cannabis use disclosure. CONCLUSIONS Patients who use cannabis experience stigmatization in the healthcare setting that may limit disclosure of cannabis use history. Future studies would be well served to explore anticipated stigma more deeply. Healthcare providers should be knowledgeable to lead such conversations relating to cannabis while maintaining an unbiased perspective.
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Affiliation(s)
- Daniel D King
- College of Nursing, Rosalind Franklin University of Medicine and Science, 3333 Green Bay Road, North Chicago, IL, 60064, USA.
| | - Christopher J Gill
- National Board of Certification and Recertification for Nurse Anesthetists, 8725 West Higgins Road, Suite 525, Chicago, IL, 60631, USA
| | - Carey S Cadieux
- Pacific College of Health and Science, 7445 Mission Valley Road #105, San Diego, CA, 92108, USA
| | - Neha Singh
- Bouvé College of Health Sciences, School of Nursing, Northeastern University, 360 Huntington Avenue, Boston, MA, 02115, USA
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21
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Esmaeili A, Dismuke-Greer C, Pogoda TK, Amuan ME, Garcia C, Del Negro A, Myers M, Kennedy E, Cifu D, Pugh MJ. Cannabis use disorder contributes to cognitive dysfunction in Veterans with traumatic brain injury. Front Neurol 2024; 15:1261249. [PMID: 38292293 PMCID: PMC10824930 DOI: 10.3389/fneur.2024.1261249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Accepted: 01/03/2024] [Indexed: 02/01/2024] Open
Abstract
Background While emerging evidence supports a link between traumatic brain injury (TBI) and progressive cognitive dysfunction in Veterans, there is insufficient information on the impact of cannabis use disorder (CUD) on long-term cognitive disorders. This study aimed to examine the incidences of cognitive disorders in Veterans with TBI and CUD and to evaluate their relationship. Methods This retrospective cohort study used the US Department of Veterans Affairs and Department of Defense administrative data from the Long-term Impact of Military-Relevant Brain Injury Consortium-Chronic Effects of Neurotrauma Consortium Phenotype study. Diagnoses suggesting cognitive disorders after a TBI index date were identified using inpatient and outpatient data from 2003 to 2022. We compared the differential cognitive disorders incidence in Veterans who had the following: (1) no CUD or TBI (control group), (2) CUD only, (3) TBI only, and (4) comorbid CUD+TBI. Kaplan-Meier analyses were used to estimate the overall cognitive disorders incidence in the above study groups. The crude and adjusted Cox proportional hazards models were used to estimate crude and adjusted hazard ratios (HRs) for cognitive disorders. Results A total of 1,560,556 Veterans [82.32% male, median (IQR) age at the time of TBI, 34.51 (11.29) years, and 61.35% white] were evaluated. The cognitive disorder incidence rates were estimated as 0.68 (95% CI, 0.62, 0.75) for CUD only and 1.03 (95% CI, 1.00, 1.06) for TBI only per 10,000 person-months of observations, with the highest estimated cognitive disorder incidence observed in participants with both TBI and CUD [1.83 (95% CI, 1.72, 1.95)]. Relative to the control group, the highest hazard of cognitive disorders was observed in Veterans with CUD+TBI [hazard ratio (HR), 3.26; 95% CI, 2.91, 3.65], followed by those with TBI only (2.32; 95 CI%, 2.13, 2.53) and with CUD (1.79; 95 CI%, 1.60, 2.00). Of note, in the CUD only subgroup, we also observed the highest risk of an early onset cognitive disorder other than Alzheimer's disease and Frontotemporal dementia. Discussion The results of this analysis suggest that individuals with comorbid TBI and CUD may be at increased risk for early onset cognitive disorders, including dementia.
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Affiliation(s)
- Aryan Esmaeili
- Health Economics Resource Center (HERC), Ci2i, VA Palo Alto Health Care System, Menlo Park, CA, United States
| | - Clara Dismuke-Greer
- Health Economics Resource Center (HERC), Ci2i, VA Palo Alto Health Care System, Menlo Park, CA, United States
| | - Terri K. Pogoda
- Center for Healthcare Organization and Implementation Research, VA Boston Healthcare System, Boston, MA, United States
- Boston University School of Public Health, Boston, MA, United States
| | - Megan E. Amuan
- Informatics, Decision-Enhancement, and Analytic Sciences Center of Innovation, VA Salt Lake City Health Care System, Salt Lake City, UT, United States
- Division of Epidemiology, Department of Internal Medicine, University of Utah School of Medicine, Salt Lake City, UT, United States
| | - Carla Garcia
- Health Economics Resource Center (HERC), Ci2i, VA Palo Alto Health Care System, Menlo Park, CA, United States
| | - Ariana Del Negro
- Health Economics Resource Center (HERC), Ci2i, VA Palo Alto Health Care System, Menlo Park, CA, United States
| | - Maddy Myers
- Informatics, Decision-Enhancement, and Analytic Sciences Center of Innovation, VA Salt Lake City Health Care System, Salt Lake City, UT, United States
| | - Eamonn Kennedy
- Informatics, Decision-Enhancement, and Analytic Sciences Center of Innovation, VA Salt Lake City Health Care System, Salt Lake City, UT, United States
- Division of Epidemiology, Department of Internal Medicine, University of Utah School of Medicine, Salt Lake City, UT, United States
| | - David Cifu
- Department of Physical Medicine and Rehabilitation, School of Medicine, Virginia Commonwealth University, Richmond, VA, United States
| | - Mary Jo Pugh
- Informatics, Decision-Enhancement, and Analytic Sciences Center of Innovation, VA Salt Lake City Health Care System, Salt Lake City, UT, United States
- Division of Epidemiology, Department of Internal Medicine, University of Utah School of Medicine, Salt Lake City, UT, United States
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22
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Vogel EA, McQuoid JM, Romm KF, Kendzor DE, Cohn AM. Unmet Healthcare Needs and Medical Cannabis Use Among Sexual and Gender Minoritized Adults in a High-Stigma Environment. JOURNAL OF HOMOSEXUALITY 2024:1-19. [PMID: 38193883 PMCID: PMC11231057 DOI: 10.1080/00918369.2024.2302427] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2024]
Abstract
Sexual and gender minoritized (SGM) individuals in high-stigma areas may use cannabis to cope with unmet healthcare needs and elevated stress. Adults in Oklahoma (Mage = 43.9[SD = 16.8], 54.5% female, 71.4% non-Hispanic White) completed a cross-sectional survey (August-September 2022). Logistic regression examined the association of SGM identity (SGM or non-SGM) with past-year unmet healthcare need (yes/no). Logistic and linear regressions also examined main and interactive effects of SGM identity and unmet healthcare needs on past-month medical cannabis use and number of relaxation/tension-reduction reasons for cannabis use endorsed. Analyses were unadjusted and adjusted for sociodemographic and healthcare characteristics. In adjusted analyses, SGM (vs. non-SGM) adults were more likely to report unmet healthcare needs (aOR = 2.24, 95% CI[1.47, 3.42], p < .001) and past-month medical cannabis use (aOR = 2.15 [1.07, 4.34], p = .033). In unadjusted analyses, SGM (versus non-SGM) adults and those with unmet healthcare needs (versus without) endorsed more relaxation/tension reduction reasons for cannabis use in separate main effects (ps < .029), and adults with unmet healthcare needs (vs. without) were more likely to report past-month medical cannabis use (OR = 2.31 [1.86, 2.88]). SGM identity X unmet healthcare need interactions did not emerge (ps > .05). SGM individuals in high-stigma environments may use cannabis to compensate for insufficient healthcare.
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Affiliation(s)
- Erin A. Vogel
- TSET Health Promotion Research Center, Stephenson Cancer Center, University of Oklahoma Health Sciences Center
- Department of Pediatrics, College of Medicine, University of Oklahoma Health Sciences Center
| | - Julia M. McQuoid
- TSET Health Promotion Research Center, Stephenson Cancer Center, University of Oklahoma Health Sciences Center
- Department of Family and Preventive Medicine, University of Oklahoma Health Sciences Center
| | - Katelyn F. Romm
- TSET Health Promotion Research Center, Stephenson Cancer Center, University of Oklahoma Health Sciences Center
- Department of Pediatrics, College of Medicine, University of Oklahoma Health Sciences Center
| | - Darla E. Kendzor
- TSET Health Promotion Research Center, Stephenson Cancer Center, University of Oklahoma Health Sciences Center
- Department of Family and Preventive Medicine, University of Oklahoma Health Sciences Center
| | - Amy M. Cohn
- TSET Health Promotion Research Center, Stephenson Cancer Center, University of Oklahoma Health Sciences Center
- Department of Pediatrics, College of Medicine, University of Oklahoma Health Sciences Center
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23
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Ford MA, Lapham GT, Matson TE, Luce C, Oliver MM, Binswanger IA. Comparing Cannabis Use for Pain to Use for Other Reasons in Primary Care Patients. J Am Board Fam Med 2024; 36:996-1007. [PMID: 37907351 PMCID: PMC11124549 DOI: 10.3122/jabfm.2023.230163r1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 07/17/2023] [Accepted: 07/24/2023] [Indexed: 11/02/2023] Open
Abstract
BACKGROUND Medical cannabis is commonly used for chronic pain, but little is known about differences in characteristics, cannabis use patterns, and perceived helpfulness among primary care patients who use cannabis for pain versus nonpain reasons. METHODS Among 1688 patients who completed a 2019 cannabis survey administered in a health system in Washington state, where recreational use is legal, participants who used cannabis for pain (n = 375) were compared with those who used cannabis for other reasons (n = 558) using survey and electronic health record data. We described group differences in participant characteristics, use patterns, and perceptions and applied adjusted multinomial logistic and modified Poisson regression. RESULTS Participants who used cannabis for pain were significantly more likely to report using applied (50.7% vs 10.6%) and beverage cannabis products (19.2% vs 11.6%), more frequent use (47.1% vs 33.1% for use ≥2 times per day; 81.6% vs 69.7% for use 4 to 7 days per week), and smoking tobacco cigarettes (19.2% vs 12.2%) than those who used cannabis for other reasons. They were also significantly more likely to perceive cannabis as very/extremely helpful (80.5% vs 72.7%), and significantly less likely to use cannabis for nonmedical reasons (4.8% vs 58.8%) or report cannabis use disorder symptoms (51.7% vs 61.1%). DISCUSSION Primary care patients who use cannabis for pain use it more frequently, often in applied and ingested forms, and have more co-use of tobacco, which may differentially impact safety and effectiveness. These findings suggest the need for different approaches to counseling in clinical care.
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Affiliation(s)
- Morgan A Ford
- From the Kaiser Permanente Colorado Institute for Health Research, Aurora, CO (MAF, IAB), Kaiser Permanente Washington Health Research Institute, Seattle, WA (GTL, TEM, CL, MMO), Department of Health Systems and Population Health, University of Washington, Seattle, WA (GTL), Colorado Permanente Medical Group, Aurora, CO (IAB), Division of General Internal Medicine, Department of Medicine, University of Colorado School of Medicine, Aurora, CO (IAB), Department of Health Systems Sciences, Kaiser Permanente Bernard J. Tyson School of Medicine, Pasadena, CA (IAB)
| | - Gwen T Lapham
- From the Kaiser Permanente Colorado Institute for Health Research, Aurora, CO (MAF, IAB), Kaiser Permanente Washington Health Research Institute, Seattle, WA (GTL, TEM, CL, MMO), Department of Health Systems and Population Health, University of Washington, Seattle, WA (GTL), Colorado Permanente Medical Group, Aurora, CO (IAB), Division of General Internal Medicine, Department of Medicine, University of Colorado School of Medicine, Aurora, CO (IAB), Department of Health Systems Sciences, Kaiser Permanente Bernard J. Tyson School of Medicine, Pasadena, CA (IAB)
| | - Theresa E Matson
- From the Kaiser Permanente Colorado Institute for Health Research, Aurora, CO (MAF, IAB), Kaiser Permanente Washington Health Research Institute, Seattle, WA (GTL, TEM, CL, MMO), Department of Health Systems and Population Health, University of Washington, Seattle, WA (GTL), Colorado Permanente Medical Group, Aurora, CO (IAB), Division of General Internal Medicine, Department of Medicine, University of Colorado School of Medicine, Aurora, CO (IAB), Department of Health Systems Sciences, Kaiser Permanente Bernard J. Tyson School of Medicine, Pasadena, CA (IAB)
| | - Casey Luce
- From the Kaiser Permanente Colorado Institute for Health Research, Aurora, CO (MAF, IAB), Kaiser Permanente Washington Health Research Institute, Seattle, WA (GTL, TEM, CL, MMO), Department of Health Systems and Population Health, University of Washington, Seattle, WA (GTL), Colorado Permanente Medical Group, Aurora, CO (IAB), Division of General Internal Medicine, Department of Medicine, University of Colorado School of Medicine, Aurora, CO (IAB), Department of Health Systems Sciences, Kaiser Permanente Bernard J. Tyson School of Medicine, Pasadena, CA (IAB)
| | - Malia M Oliver
- From the Kaiser Permanente Colorado Institute for Health Research, Aurora, CO (MAF, IAB), Kaiser Permanente Washington Health Research Institute, Seattle, WA (GTL, TEM, CL, MMO), Department of Health Systems and Population Health, University of Washington, Seattle, WA (GTL), Colorado Permanente Medical Group, Aurora, CO (IAB), Division of General Internal Medicine, Department of Medicine, University of Colorado School of Medicine, Aurora, CO (IAB), Department of Health Systems Sciences, Kaiser Permanente Bernard J. Tyson School of Medicine, Pasadena, CA (IAB)
| | - Ingrid A Binswanger
- From the Kaiser Permanente Colorado Institute for Health Research, Aurora, CO (MAF, IAB), Kaiser Permanente Washington Health Research Institute, Seattle, WA (GTL, TEM, CL, MMO), Department of Health Systems and Population Health, University of Washington, Seattle, WA (GTL), Colorado Permanente Medical Group, Aurora, CO (IAB), Division of General Internal Medicine, Department of Medicine, University of Colorado School of Medicine, Aurora, CO (IAB), Department of Health Systems Sciences, Kaiser Permanente Bernard J. Tyson School of Medicine, Pasadena, CA (IAB)
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24
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Scott JR, Williams DA, Harte SE, Harris RE, Litinas E, Sisley S, Clauw DJ, Boehnke KF. Relationship Between Nociplastic Pain Involvement and Medication Use, Symptom Relief, and Adverse Effects Among People Using Medical Cannabis for Chronic Pain. Clin J Pain 2024; 40:1-9. [PMID: 37823303 DOI: 10.1097/ajp.0000000000001164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Accepted: 09/21/2023] [Indexed: 10/13/2023]
Abstract
OBJECTIVES Cannabis is increasingly being used for chronic pain management, but cannabis' effects remain poorly characterized in chronic nociplastic pain (NPP), which is posited to be caused by disturbances in nervous system pain processing. In this cross-sectional study (n=1213), we used the 2011 Fibromyalgia (FM) Survey Criteria as a surrogate measure for degree of NPP among individuals using medical cannabis for chronic pain. METHODS Using a quartile-split, we investigated associations between the degree of NPP and medication use, cannabis use characteristics, and symptom relief. Continuous variables were assessed using one-way analysis of variance and categorical variables with Pearson χ 2 test and binomial logistic regression for calculation of odds ratios. RESULTS Participants were predominately female (59%), with a mean ± SD age of 49.4±13.6 years. Higher FM scores were associated with less self-reported improvement in pain and health since initiating medical cannabis use, as well as more cannabis-related side effects. Paradoxically, higher FM scores were also associated with higher usage of concomitant medication use (including opioids and benzodiazepines) but also with substituting cannabis for significantly more medication classes, including opioids and benzodiazepines. DISCUSSION This article presents evidence that individuals in higher NPP quartiles have higher analgesic intake, higher odds of substituting cannabis for medications, higher side effect burden, and lower therapeutic effect from cannabis. These seemingly contradictory findings may reflect higher symptom burden, polypharmacy at baseline, or that NPP may be challenging to treat with cannabis. Further research is necessary to further explain cannabinoid effects in NPP.
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Affiliation(s)
- J Ryan Scott
- Department of Anesthesiology, Chronic Pain and Fatigue Research Center, University of Michigan
| | - David A Williams
- Department of Anesthesiology, Chronic Pain and Fatigue Research Center, University of Michigan
| | - Steven E Harte
- Department of Anesthesiology, Chronic Pain and Fatigue Research Center, University of Michigan
| | - Richard E Harris
- Department of Anesthesiology, Chronic Pain and Fatigue Research Center, University of Michigan
| | | | | | - Daniel J Clauw
- Department of Anesthesiology, Chronic Pain and Fatigue Research Center, University of Michigan
| | - Kevin F Boehnke
- Department of Anesthesiology, Chronic Pain and Fatigue Research Center, University of Michigan
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25
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Boehnke KF, Wu CL, Clauw DJ. Thoughtfully Integrating Cannabis Products Into Chronic Pain Treatment. Anesth Analg 2024; 138:5-15. [PMID: 38100797 PMCID: PMC10730114 DOI: 10.1213/ane.0000000000005904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2023]
Abstract
Cannabis products (CPs) and cannabis-based medicines (CBMs) are becoming increasingly available and are commonly used for pain management. The growing societal acceptance of cannabis and liberalization of cannabis laws allows patients to access CPs with minimal clinical oversight. While there is mechanistic plausibility that CPs and CBMs may be useful for pain management, the clinical trial literature is limited and does not refute or support the use of CBMs for pain management. Complicating matters, a large and growing body of observational literature shows that many people use CPs for pain management and in place of other medications. However, products and dosing regimens in existing trials are not generalizable to the current cannabis market, making it difficult to compare and reconcile these 2 bodies of literature. Given this complexity, clinicians need clear, pragmatic guidance on how to appropriately educate and work with patients who are using CBMs for pain management. In this review, we narratively synthesize the evidence to enable a clear view of current landscape and provide pragmatic advice for clinicians to use when working with patients. This advice revolves around 3 principles: (1) maintaining the therapeutic alliance; (2) harm reduction and benefit maximization; and (3) pragmatism, principles of patient-centered care, and use of best clinical judgment in the face of uncertainty. Despite the lack of certainty CPs and chronic pain management use, we believe that following these principles can make most of the clinical opportunity presented by discussions around CPs and also enhance the likelihood of clinical benefit from CPs.
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Affiliation(s)
- Kevin F. Boehnke
- Anesthesiology Department, Chronic Pain and Fatigue Research Center, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Christopher L. Wu
- Department of Anesthesiology, Pain Medicine and Critical Care; Hospital for Special Surgery; New York, NY, USA
- Department of Anesthesiology, Weill Cornell Medicine, New York, NY, USA
| | - Daniel J. Clauw
- Anesthesiology Department, Chronic Pain and Fatigue Research Center, University of Michigan Medical School, Ann Arbor, MI, USA
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Liu J, Nabavizadeh P, Rao P, Derakhshandeh R, Han DD, Guo R, Murphy MB, Cheng J, Schick SF, Springer ML. Impairment of Endothelial Function by Aerosol From Marijuana Leaf Vaporizers. J Am Heart Assoc 2023; 12:e032969. [PMID: 38014661 PMCID: PMC10727338 DOI: 10.1161/jaha.123.032969] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Accepted: 11/02/2023] [Indexed: 11/29/2023]
Abstract
BACKGROUND Marijuana leaf vaporizers, which heat plant material and sublimate Δ-9-tetrahydrocannabinol without combustion, are popular alternatives to smoking cannabis that are generally perceived to be less harmful. We have shown that smoke from tobacco and marijuana, as well as aerosol from e-cigarettes and heated tobacco products, impair vascular endothelial function in rats measured as arterial flow-mediated dilation (FMD). METHODS AND RESULTS We exposed 8 rats per group to aerosol generated by 2 vaporizer systems (Volcano and handheld Yocan) using marijuana with varying Δ-9-tetrahydrocannabinol levels, in a single pulsatile exposure session of 2 s/min over 5 minutes, and measured changes in FMD. To model secondhand exposure, we exposed rats for 1 minute to diluted aerosol approximating release of uninhaled Volcano aerosol into typical residential rooms. Exposure to aerosol from marijuana with and without cannabinoids impaired FMD by ≈50%. FMD was similarly impaired by aerosols from Yocan (237 °C), and from Volcano at both its standard temperature (185 °C) and the minimum sublimation temperature of Δ-9-tetrahydrocannabinol (157 °C), although the low-temperature aerosol condition did not effectively deliver Δ-9-tetrahydrocannabinol to the circulation. Modeled secondhand exposure based on diluted Volcano aerosol also impaired FMD. FMD was not affected in rats exposed to clean air or water vapor passed through the Volcano system. CONCLUSIONS Acute direct exposure and modeled secondhand exposure to marijuana leaf vaporizer aerosol, regardless of cannabinoid concentration or aerosol generation temperature, impair endothelial function in rats comparably to marijuana smoke. Our findings indicate that use of leaf vaporizers is unlikely to reduce the vascular risk burden of smoking marijuana.
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Affiliation(s)
- Jiangtao Liu
- Cardiovascular Research Institute, University of California, San FranciscoSan FranciscoCAUSA
- Division of CardiologyUniversity of California, San FranciscoSan FranciscoCAUSA
| | - Pooneh Nabavizadeh
- Cardiovascular Research Institute, University of California, San FranciscoSan FranciscoCAUSA
- Present address:
Division of CardiologyUniversity of CincinnatiCincinnatiOHUSA
| | - Poonam Rao
- Division of CardiologyUniversity of California, San FranciscoSan FranciscoCAUSA
- Center for Tobacco Control Research and EducationUniversity of California, San FranciscoSan FranciscoCAUSA
- Present address:
Christus Good Shepherd/Texas A&M University Internal Medicine Residency ProgramLongviewTXUSA
| | - Ronak Derakhshandeh
- Division of CardiologyUniversity of California, San FranciscoSan FranciscoCAUSA
| | - Daniel D. Han
- Division of CardiologyUniversity of California, San FranciscoSan FranciscoCAUSA
- Present address:
School of Medicine and DentistryUniversity of RochesterRochesterNYUSA
| | - Raymond Guo
- Division of CardiologyUniversity of California, San FranciscoSan FranciscoCAUSA
- Present address:
Stanford UniversityStanfordCAUSA
| | - Morgan B. Murphy
- Division of Occupational and Environmental MedicineUniversity of California, San FranciscoSan FranciscoCAUSA
- Present address:
Sutter Health California Pacific Medical CenterStanfordCAUSA
| | - Jing Cheng
- Division of Oral Epidemiology and Dental Public HealthUniversity of California, San FranciscoSan FranciscoCAUSA
| | - Suzaynn F. Schick
- Center for Tobacco Control Research and EducationUniversity of California, San FranciscoSan FranciscoCAUSA
- Division of Occupational and Environmental MedicineUniversity of California, San FranciscoSan FranciscoCAUSA
| | - Matthew L. Springer
- Cardiovascular Research Institute, University of California, San FranciscoSan FranciscoCAUSA
- Division of CardiologyUniversity of California, San FranciscoSan FranciscoCAUSA
- Center for Tobacco Control Research and EducationUniversity of California, San FranciscoSan FranciscoCAUSA
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27
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Vigano A, Moride Y, Hachem Y, Canac-Marquis M, Gamaoun R, Kalaba M, Martel MO, Perez J, Néron A, Beaulieu P, Desroches J, Ware M. The Quebec Cannabis Registry: Investigating the Safety and Effectiveness of Medical Cannabis. Cannabis Cannabinoid Res 2023; 8:1106-1116. [PMID: 36579921 PMCID: PMC10714117 DOI: 10.1089/can.2022.0041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Objective: To investigate the safety and effectiveness of medical cannabis (MC) in the real-world clinical practice setting. Design: A 4-year prospective noncomparative registry of adult patients who initiated MC for a variety of indications. This paper reports on patients followed for up to 12 months, with interim visits at 3, 6, and 9 months after enrollment. Setting: Public or private outpatient clinics certified to authorize MC in the province of Quebec, Canada. Participants: Overall, 2991 adult (age ≥18 years) patients (mean age 51 years; 50.2% women) were enrolled between May 2015 and October 2018, with the last follow-up ending in May 2019. Interventions/Exposures: Cannabis products (dried, oil, or other) purchased from a Canadian licensed cannabis producer as authorized by physicians. Main Outcome Measures: The primary outcomes were self-reported pain severity, interference and relief (Brief Pain Inventory [BPI]), symptoms using the Revised Edmonton Symptom Assessment System (ESAS-r) and health-related quality of life dimensions (EQ-5D-5L) at baseline and each follow-up visit. The secondary outcomes were self-reported adverse events (AEs) and characteristics of cannabis treatment. Results: All patient-reported outcomes (BPI, ESAS-r, and EQ-5D-5L) showed a statistically significant improvement at 3 months (all p<0.01), which was maintained or further improved (for pain interference, tiredness, and well-being) over the remainder of the 12-month follow-up. Results also revealed clinically significant improvements in pain interference and tiredness, anxiety, and well-being from baseline. There were 79 AE reports (77 patients), 16 met the regulatory definition of seriousness, in which only 8 AEs were certainly or probably related to MC. Conclusions: MC directed by physicians appears to be safe and effective within 3 months of initiation for a variety of medical indications.
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Affiliation(s)
- Antonio Vigano
- Medical Cannabis Program in Oncology, Cedars Cancer Center, McGill University Health Centre, Montreal, Canada
| | - Yola Moride
- Faculty of Pharmacy, University of Montreal, Montreal, Canada
- Rutgers The State University of New Jersey, Center for Pharmacoepidemiology and Treatment Science, New Brunswick, New Jersey, USA
| | - Yasmina Hachem
- Medical Cannabis Program in Oncology, Cedars Cancer Center, McGill University Health Centre, Montreal, Canada
| | | | - Rihab Gamaoun
- Medical Cannabis Program in Oncology, Cedars Cancer Center, McGill University Health Centre, Montreal, Canada
| | - Maja Kalaba
- Canopy Growth Corporation, Smiths Falls, Canada
| | - Marc O. Martel
- Faculty of Dentistry & Department of Anesthesia, McGill University, Montreal, Canada
| | - Jordi Perez
- Alan Edwards Pain Management Unit, McGill University Health Centre, Montreal, Canada
| | - Andrée Néron
- McGill University Health Centre, Montreal, Canada
| | - Pierre Beaulieu
- Department of Anesthesiology & Pain Medicine, Université de Montréal Faculté de Medecine, Montreal, Canada
| | - Julie Desroches
- Département de Pharmacologie, Université de Montréal, Montreal, Canada
| | - Mark Ware
- Department of Family Medicine, McGil University, Montreal, Canada
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AminiLari M, Busse JW, Turna J, MacKillop J. Declared Rationale for Cannabis Use Before and After Legalization for Nonmedical Use: A Longitudinal Study of Community Adults in Ontario. Cannabis Cannabinoid Res 2023; 8:1133-1139. [PMID: 35333612 DOI: 10.1089/can.2021.0128] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Objectives: To examine the proportion of individuals using cannabis for medical purposes who reported nonmedical use of cannabis after it became legal to do so. Materials and Methods: We acquired data from the Population Assessment for Tomorrow's Health, the Cannabis Legalization Surveillance Study on a subpopulation of participants residing in Hamilton, Ontario, Canada, who reported using cannabis for medical purposes. Specifically, we acquired data 6 months before, and again 6 months after, legalization of cannabis for nonmedical purposes. We constructed a logistic regression model to explore the association between potential explanatory factors and endorsing exclusively nonmedical use after legalization and reported associations as odds ratios and 95% confidence intervals. Results: Our sample included 254 respondents (mean age 33±13; 61% female), of which 208 (82%) reported both medical and nonmedical use of cannabis (dual motives) before legalization for nonmedical purposes, and 46 (18%) reported cannabis use exclusively for medical purposes. Twenty-five percent (n=63) indicated they had medical authorization to use medical cannabis, of which 37 (59%) also endorsed nonmedical use. After legalization of nonmedical cannabis, ∼1 in 4 previously exclusive cannabis users for medical purposes declared dual use (medical and nonmedical), and ∼1 in 4 previously dual users declared exclusively nonmedical use of cannabis. No individual with medical authorization reported a change to exclusively nonmedical use after legalization. Our adjusted regression analysis found that younger age, male sex, and lacking authorization for cannabis use were associated with declaring exclusively nonmedical use of cannabis after legalization. Anxiety, depression, impaired sleep, pain, and headaches were among the most common complaints for which respondents used cannabis therapeutically. Most respondents reported using cannabis as a substitute for prescription medication at least some of the time, and approximately half reported using cannabis as a substitute for alcohol at least some of the time. Conclusions: In a community sample of Canadian adults reporting use of cannabis for medical purposes, legalization of nonmedical cannabis was associated with a substantial proportion changing to either dual use (using cannabis for both medical and nonmedical purposes) or exclusively nonmedical use. Younger men without medical authorization for cannabis use were more likely to declare exclusively nonmedical use after legalization.
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Affiliation(s)
- Mahmood AminiLari
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, Canada
- The Michael G. DeGroote Institute for Pain Research and Care, McMaster University, Hamilton, Canada
| | - Jason W Busse
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, Canada
- The Michael G. DeGroote Institute for Pain Research and Care, McMaster University, Hamilton, Canada
- Department of Anesthesia, and McMaster University, Hamilton, Canada
- Michael G. DeGroote Centre for Medicinal Cannabis Research, McMaster University & St. Joseph's Healthcare, Hamilton, Canada
| | - Jasmine Turna
- Michael G. DeGroote Centre for Medicinal Cannabis Research, McMaster University & St. Joseph's Healthcare, Hamilton, Canada
- Peter Boris Centre for Addictions Research, McMaster University & St. Joseph's Healthcare, Hamilton, Canada
| | - James MacKillop
- Michael G. DeGroote Centre for Medicinal Cannabis Research, McMaster University & St. Joseph's Healthcare, Hamilton, Canada
- Peter Boris Centre for Addictions Research, McMaster University & St. Joseph's Healthcare, Hamilton, Canada
- Department of Psychiatry and Behavioral Neurosciences, McMaster University, Hamilton, Canada
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Tanco K, Olson A, Fellman B, Jankowski M, Lai SY, Shete S, Harbison K, Scheid J, Bruera E. Analysis of Dispensing and Utilization Patterns of Medical Cannabis Products in State Licensed Cannabis Dispensaries. J Palliat Med 2023; 26:1482-1487. [PMID: 37285183 DOI: 10.1089/jpm.2023.0075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023] Open
Abstract
Background: To understand real-world dispensing and utilization patterns of medical cannabis (MC) and its financial impact on patients, we analyzed the database of a cannabis company licensed in New York state. Objectives: To evaluate the tetrahydrocannabinol (THC)/cannabidiol (CBD) dose ratios, association of various medical conditions to THC/CBD dose, and the cost of products in registered patients receiving MC from four licensed state dispensaries. Design: Retrospective analysis conducted on anonymized data between January 1, 2016 and December 31, 2020 listing 422,201 dispensed products from 32,845 individuals aged 18 years and older. Setting/Subjects: Adult patients with medical certification for cannabis use in New York, USA. Measurements: The database included patient's age, gender, qualifying medical condition, type and dose of product, medication directions, and amount of product dispensed. Results: Findings showed a median age of 53 years with 52% of patients female. Males were found to use more products than females (1.06:1). Pain (85%) was the most common medical condition and inhalation (57%) the most common route except when used for cancer-directed treatment and neurological conditions. Individuals received a median of six prescriptions costing a median of $50/product. Average THC:CBD ratios were 28:0.5 mg/day and 12:0.25 mg/dose. Neurological conditions demonstrated the highest average cost [mean (95% confidence interval {CI}): $73 ($71-$75)] and average CBD/dose per product [mean (95% CI): 5.89 (5.38-6.40)]. Individuals with a history of substance use disorder utilizing MC as an alternative substance displayed the highest average THC/dose [mean (95% CI): 14.25 (13.36-15.14)]. Conclusion: MC was utilized for various medical conditions with variability in THC:CBD ratio seen depending on the condition. Cost variation was also observed based on the individual's medical condition.
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Affiliation(s)
- Kimberson Tanco
- Department of Palliative, Rehabilitation, and Integrative Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Amanda Olson
- Department of Stem Cell Transplantation, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Bryan Fellman
- Department of Biostatistics, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Mika Jankowski
- Hematology Affairs Department, Lilly LLC, Hematology Medical Science Liaison, Indianapolis, Indiana, USA
| | - Stephen Y Lai
- Department of Head and Neck Surgery, and The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Sanjay Shete
- Department of Biostatistics, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Kevin Harbison
- Training and Development Department, PharmaCann, Lead Retail Pharmacist, Amherst, New York, USA
| | - Jennifer Scheid
- Department of Physical Therapy, Daemen University, Amherst, New York, USA
| | - Eduardo Bruera
- Department of Palliative, Rehabilitation, and Integrative Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
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Livne O, Mannes ZL, McDowell YE, Shmulewitz D, Malte CA, Saxon AJ, Hasin DS. Mental and Physical Health Conditions Among U.S. Veterans with Cannabis Use and Cannabis Use Disorders. CURRENT ADDICTION REPORTS 2023; 10:441-457. [PMID: 38149223 PMCID: PMC10751043 DOI: 10.1007/s40429-023-00490-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/30/2023] [Indexed: 12/28/2023]
Abstract
Purpose of Review Veterans are a large population that is disproportionately affected by various physical and mental health conditions. The primary aim of this review is to provide a concise overview of recent literature on the prevalence of cannabis use and cannabis use disorder (CUD) among US Veterans, and associations with mental and physical health conditions. We also addressed gaps in the literature by investigating associations between CUD and mental and physical health conditions in 2019 data from the Veterans Health Administration (VHA; N=5,657,277). Recent Findings In total, 25 studies were reviewed. In 2019, the prevalence of Veteran cannabis use ranged from 11.9%-18.7%. Cannabis use and CUD were associated with bipolar disorders, psychotic disorders, suicidality, pain conditions, and other substance use, but less consistently associated with depressive disorders, anxiety disorders, and posttraumatic stress disorder. Analyses of 2019 VHA data indicated that CUD was strongly associated with a broad array of physical and mental health conditions and mortality. Summary Cannabis use and CUD are prevalent and highly comorbid with other conditions among US Veterans. Harm reduction methods tailored to these populations are needed.
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Affiliation(s)
- Ofir Livne
- Department of Epidemiology, Columbia University Mailman School of Public Health, New York, NY, USA
- New York State Psychiatric Institute, New York, NY, USA
| | - Zachary L. Mannes
- Department of Epidemiology, Columbia University Mailman School of Public Health, New York, NY, USA
- New York State Psychiatric Institute, New York, NY, USA
| | - Yoanna E. McDowell
- Health Services Research & Development (HSR&D) Seattle Center of Innovation for Veteran-Centered and Value-Driven Care, Veterans Affairs (VA) Puget Sound Health Care System, Seattle, WA, USA
- Center of Excellence in Substance Addiction Treatment and Education, VA Puget Sound Health Care System, Seattle, WA
| | - Dvora Shmulewitz
- New York State Psychiatric Institute, New York, NY, USA
- Department of Psychiatry, Columbia University Irving Medical Center, New York, NY, USA
| | - Carol A. Malte
- Health Services Research & Development (HSR&D) Seattle Center of Innovation for Veteran-Centered and Value-Driven Care, Veterans Affairs (VA) Puget Sound Health Care System, Seattle, WA, USA
- Center of Excellence in Substance Addiction Treatment and Education, VA Puget Sound Health Care System, Seattle, WA
| | - Andrew J. Saxon
- Health Services Research & Development (HSR&D) Seattle Center of Innovation for Veteran-Centered and Value-Driven Care, Veterans Affairs (VA) Puget Sound Health Care System, Seattle, WA, USA
- Center of Excellence in Substance Addiction Treatment and Education, VA Puget Sound Health Care System, Seattle, WA
- Department of Psychiatry & Behavioral Sciences, University of Washington School of Medicine, Seattle, WA, USA
| | - Deborah S. Hasin
- Department of Epidemiology, Columbia University Mailman School of Public Health, New York, NY, USA
- New York State Psychiatric Institute, New York, NY, USA
- Department of Psychiatry, Columbia University Irving Medical Center, New York, NY, USA
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Carnide N, Nadalin V, Mustard C, Severin CN, Furlan AD, Smith PM. Cannabis use among workers with work-related injuries and illnesses: results from a cross-sectional study of workers' compensation claimants in Ontario, Canada. BMJ Open 2023; 13:e072994. [PMID: 37463805 PMCID: PMC10357653 DOI: 10.1136/bmjopen-2023-072994] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 07/20/2023] Open
Abstract
OBJECTIVES Little is known about how workers use cannabis following a work-related injury/illness, including whether they receive clinical guidance. The objective was to compare characteristics of workers using and not using cannabis after a work-related injury/illness and describe use patterns. DESIGN Cross-sectional study. SETTING AND PARTICIPANTS Workers who experienced a work-related physical injury/illness resulting in one or more days of lost time compensated by the workers' compensation authority in Ontario, Canada (n=1196). METHODS Participants were interviewed 18 or 36 months after their injury/illness. Participants were asked about their past-year cannabis use, including whether use was for the treatment of their work-related condition. Sociodemographic, work and health characteristics were compared across cannabis groups: no past-year use; use for the work-related condition; use unrelated to the work-related condition. Cannabis use reasons, patterns, perceived impact and healthcare provider engagement were described. RESULTS In total, 27.4% of the sample reported using cannabis (14.1% for their work-related condition). Workers using cannabis for their condition were less likely to be working (58.0%) and more likely to have quite a bit/extreme pain interference (48.5%), psychological distress (26.0%) and sleep problems most/all the time (62.1%) compared with those not using cannabis (74.3%, 26.3%, 12.0% and 38.0%, respectively) and those using cannabis for other reasons (74.2%, 19.5%, 12.0% and 37.1%, respectively) (all p<0.0001). No significant differences were observed in medical authorisations for use among those using cannabis for their condition (20.4%) or unrelated to their condition (15.7%) (p=0.3021). Healthcare provider guidance was more common among those using cannabis for their condition (32.7%) compared with those using for other reasons (17.1%) (p=0.0024); however, two-thirds of this group did not receive guidance. CONCLUSIONS Cannabis may be used to manage the consequences of work-related injuries/illnesses, yet most do not receive clinical guidance. It is important that healthcare providers speak with injured workers about their cannabis use.
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Affiliation(s)
- Nancy Carnide
- Institute for Work and Health, Toronto, Ontario, Canada
- Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
| | | | - Cameron Mustard
- Institute for Work and Health, Toronto, Ontario, Canada
- Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
| | | | - Andrea D Furlan
- Institute for Work and Health, Toronto, Ontario, Canada
- Toronto Rehabilitation Institute, University Health Network, Toronto, Ontario, Canada
- Department of Medicine, Temerty Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada
| | - Peter M Smith
- Institute for Work and Health, Toronto, Ontario, Canada
- Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
- Department of Epidemiology and Preventive Medicine, Monash University, Melbourne, Victoria, Australia
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N S Gendy M, Taisir R, Sousa S, Costello J, Rush B, Busse JW, Mackillop J. Prevalence of cannabis use disorder among individuals using medical cannabis at admission to inpatient treatment for substance use disorders. Addict Behav 2023; 142:107667. [PMID: 36893511 DOI: 10.1016/j.addbeh.2023.107667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Revised: 12/28/2022] [Accepted: 02/14/2023] [Indexed: 02/18/2023]
Abstract
INTRODUCTION Cannabis is used for medical and recreational purposes and may result in cannabis use disorder (CUD). This study explored the prevalence of cannabis use disorder and other psychiatric comorbidities among inpatients undergoing treatment for substance use disorder who reported medical cannabis use at admission. METHODS We assessed CUD and other substance use disorders based on DSM-5 symptoms, anxiety with the Generalized Anxiety Disorder scale (GAD-7), depression with the Patient Health Questionnaire (PHQ-9), and post-traumatic stress disorder with the PTSD Checklist for DSM-5 (PCL-5). We compared the prevalence of CUD and other psychiatric comorbidities between inpatients who endorsed the use of cannabis for medical purposes only vs those endorsing use for medical and recreational purposes. RESULTS Among 125 inpatients, 42% reported medical use only, and 58% reported medical and recreational use (dual motives). For CUD, 28% of Medical-Only and 51% of Dual-Use motives patients met the diagnostic criteria for CUD (p = 0.016). High psychiatric comorbidities were present: 79% and 81% screened positive for an anxiety disorder, 60% and 61% screened positive for depression, and 66% and 57% screened positive for PTSD for the Medical-Only and Dual-Use inpatients, respectively. CONCLUSIONS Many treatment-seeking individuals with substance use disorder who report medical cannabis use meet criteria for CUD, particularly those reporting concurrent recreational use.
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Affiliation(s)
- Marie N S Gendy
- Peter Boris Centre for Addictions Research, McMaster University & St. Joseph's Healthcare Hamilton, Hamilton, ON, Canada; Department of Psychiatry and Behavioral Neurosciences, McMaster University, Hamilton, Ontario, Canada; Homewood Research Institute, Guelph, ON, Canada
| | | | - Sarah Sousa
- Homewood Research Institute, Guelph, ON, Canada
| | | | - Brian Rush
- Homewood Research Institute, Guelph, ON, Canada; Center for Addiction and Mental Health, Toronto, ON, Canada
| | - Jason W Busse
- Department of Anesthesia, Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, ON, Canada; Michael G. DeGroote Centre for Medicinal Cannabis Research, McMaster University & St. Joseph's Healthcare Hamilton, Canada
| | - James Mackillop
- Peter Boris Centre for Addictions Research, McMaster University & St. Joseph's Healthcare Hamilton, Hamilton, ON, Canada; Department of Psychiatry and Behavioral Neurosciences, McMaster University, Hamilton, Ontario, Canada; Homewood Research Institute, Guelph, ON, Canada; Michael G. DeGroote Centre for Medicinal Cannabis Research, McMaster University & St. Joseph's Healthcare Hamilton, Canada; Department of Psychology, Neuroscience, and Behavior, McMaster University, Hamilton, Canada.
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Kaufmann CN, Malhotra A, Yang KH, Han BH, Nafsu R, Lifset ET, Nguyen K, Sexton M, Moore AA. Cannabis use for Sleep Disturbance Among Older Patients in a Geriatrics Clinic. Int J Aging Hum Dev 2023; 97:3-17. [PMID: 36226368 PMCID: PMC10097827 DOI: 10.1177/00914150221128971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Cannabis use is growing among older adults to manage medical concerns including poor sleep. In this study, we characterized how patients seen at a geriatrics clinic use cannabis to address sleep disturbance. Specifically, we conducted an anonymous survey of 568 adults, including 83 who reported cannabis use within the past 3 years, to inquire about such use. We compared cannabis use characteristics between those using it for sleep disturbance versus all other conditions. We considered a p-value <.10 to be statistically significant. Among the cannabis users in our sample, 29% reported using cannabis for sleep disturbance (N = 24). They were more likely than other users to be female (p = .07), consume cannabis more frequently (p = .01), use products containing tetrahydrocannabinol (THC) (vs. cannabidiol [CBD]-only; p < .01), and use cannabis to target more symptoms (p < .01). As cannabis use continues to grow in older populations, it is essential to delineate better how cannabis may be used safely and effectively to improve older adults' sleep health.
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Affiliation(s)
- Christopher N. Kaufmann
- Department of Health Outcomes and Biomedical Informatics, University of Florida College of Medicine, Gainesville, FL, USA
| | - Atul Malhotra
- Department of Medicine, Division of Pulmonary, Critical Care, and Sleep Medicine, University of California San Diego, La Jolla, CA, USA
| | - Kevin H. Yang
- Department of Medicine, Division of Geriatrics, Gerontology, and Palliative Care, University of California San Diego, La Jolla, CA, USA
| | - Benjamin H. Han
- Department of Medicine, Division of Geriatrics, Gerontology, and Palliative Care, University of California San Diego, La Jolla, CA, USA
| | - Reva Nafsu
- Department of Medicine, Division of Geriatrics, Gerontology, and Palliative Care, University of California San Diego, La Jolla, CA, USA
| | - Ella T. Lifset
- Department of Medicine, Division of Geriatrics, Gerontology, and Palliative Care, University of California San Diego, La Jolla, CA, USA
| | - Khai Nguyen
- Department of Medicine, Division of Geriatrics, Gerontology, and Palliative Care, University of California San Diego, La Jolla, CA, USA
| | - Michelle Sexton
- Department of Anesthesiology, University of California San Diego, La Jolla, CA, USA
| | - Alison A. Moore
- Department of Medicine, Division of Geriatrics, Gerontology, and Palliative Care, University of California San Diego, La Jolla, CA, USA
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Capler NR, Balneaves LG, Buxton JA, Kerr T. Reasonable access: important characteristics and perceived quality of legal and illegal sources of cannabis for medical purposes in Canada. J Cannabis Res 2023; 5:18. [PMID: 37291647 DOI: 10.1186/s42238-023-00185-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Accepted: 04/30/2023] [Indexed: 06/10/2023] Open
Abstract
BACKGROUND Throughout the past two decades of legal medical cannabis in Canada, individuals have experienced challenges related to accessing legal sources of cannabis for medical purposes. The objective of our study was to examine the sources of cannabis accessed by individuals authorized to use medical cannabis and to identify possible reasons for their use of illegal sources. METHODS Individuals who participated in the Cannabis Access Regulations Study (CANARY), a national cross-sectional survey launched in 2014, and indicated they were currently authorized to use cannabis for medical purposes in Canada were included in this study. We assessed differences between participants accessing cannabis from only legal sources versus from illegal sources in relation to sociodemographic characteristics, health-related factors, and characteristics of medical cannabis they considered important. A secondary analysis assessed differences in satisfaction with various dimensions of cannabis products and services provided by legal versus illegal sources. RESULTS Half of the 237 study participants accessed cannabis from illegal sources. Individuals accessing cannabis from illegal sources were significantly more likely to value pesticide-free products, access to a variety of strains, ability to select strain and dosage, ability to observe and smell cannabis, availability in a dispensary, and availability in small quantities than did individuals accessing cannabis from only legal sources (all p < 0.05). Additionally, participants gave significantly higher satisfaction scores to illegal sources than to legal sources on service-related dimensions of cannabis access (all p < 0.05). CONCLUSION Our findings contribute to an understanding of reasonable access to medical cannabis from a patient perspective and how to assess whether it has been achieved. Characteristics of cannabis products and services valued by patients and appropriate to their needs should be incorporated into legal medical cannabis programs to promote the use of legal medical sources. While pertaining specifically to medical use of cannabis in Canada, the findings of this study may also be instructive for understanding the use of illegal cannabis sources for non-medical purposes in Canada and provide insight for other jurisdictions implementing cannabis regulations for both medical and non-medical purposes.
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Affiliation(s)
- N Rielle Capler
- School of Population and Public Health, Faculty of Medicine, University of British Columbia, 2206 East Mall, Musqueam Traditional Territory, Vancouver, BC, V6T 1Z3, Canada.
| | - Lynda G Balneaves
- College of Nursing, University of Manitoba, Room 495, 89 Curry Place, Winnipeg, MB, R3T 2N2, Canada
| | - Jane A Buxton
- School of Population and Public Health, Faculty of Medicine, University of British Columbia, 2206 East Mall, Musqueam Traditional Territory, Vancouver, BC, V6T 1Z3, Canada
- British Columbia Centre for Disease Control, 655 West 12th Avenue, Vancouver, BC, V5Z 4R4, Canada
| | - Thomas Kerr
- British Columbia Centre on Substance Use, 400-1045 Howe Street, Vancouver, BC, V6Z 2A9, Canada
- Department of Medicine, University of British Columbia, St. Paul's Hospital, 608-1081 Burrard Street, Vancouver, BC, V6Z 1Y6, Canada
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Minhas M, Lunn SE. Naturalistic examination of the anxiolytic effects of medical cannabis and associated gender and age differences in a Canadian cohort. J Cannabis Res 2023; 5:20. [PMID: 37296470 DOI: 10.1186/s42238-023-00192-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Accepted: 05/19/2023] [Indexed: 06/12/2023] Open
Abstract
BACKGROUND The aim of the current study was to examine patterns of medical cannabis use in those using it to treat anxiety and to investigate if the anxiolytic effects of cannabis were impacted by gender and/or age. METHODS Patient-reported data (n = 184 participants, 61% female, 34.7 ± 8.0 years) was collected through the Strainprint® app. Tracked sessions were included if the method of administration was inhalation, treatment was for anxiety and the product used was dried flower. The final analyzed dataset encompassed three of the most commonly utilized dried flower products in anxiety sessions. Independent sample t-tests were used. The core analysis examined within subject changes overtime (pre-medication to post-medication) and interactions between time with two candidate moderators [gender (male, female) and age (18-29, 30-39, and 40 + years old)] by using analysis of variance (ANOVA). For significant main effects of interactions, post hoc tests were conducted using a Bonferroni correction. A secondary analysis examined differences in proportion of emotives endorsed as a function of gender or age using chi-square test of independence. RESULTS Cannabis consumption resulted in a significant decrease in anxiety scores among both males and females (average efficacy of 50%) and efficacy was similar across the three cultivars. However, gender differences in efficacy were identified in two of the cultivars. All age groups experienced significant reductions in their anxiety post cannabis consumption; however, the 40 + year old group had significantly less efficacy than the other groups. The overall optimal dosing for the entire cohort was 9-11 inhalations for males and 5-7 inhalations for females, with some variation in dosing across the different cultivars, genders and age groups. CONCLUSIONS We found all three cultivars had significant anxiolytic effects and were well-tolerated. Some limitations of the study are the moderate sample size, self-reported diagnosis of anxiety, unknown comorbidities and experience with cannabis, whether other drugs or cannabis products were used, and restriction to solely inhaled administration. We suggest that the gender and age differences in optimal dosing could support both healthcare practitioners and patients initiate medical cannabis treatment for anxiety.
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Affiliation(s)
- Meenu Minhas
- Aurora Cannabis Inc, Edmonton, AB, Canada
- Aurora Cannabis Inc, 1590 Galbraith Rd, BC, V9M 4A1, Comox, Canada
| | - Stephanie E Lunn
- Aurora Cannabis Inc, Edmonton, AB, Canada.
- Aurora Cannabis Inc, 1590 Galbraith Rd, BC, V9M 4A1, Comox, Canada.
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Strand NH, Maloney J, Kraus M, Wie C, Turkiewicz M, Gomez DA, Adeleye O, Harbell MW. Cannabis for the Treatment of Fibromyalgia: A Systematic Review. Biomedicines 2023; 11:1621. [PMID: 37371716 DOI: 10.3390/biomedicines11061621] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 05/09/2023] [Accepted: 05/25/2023] [Indexed: 06/29/2023] Open
Abstract
Fibromyalgia is a common disease syndrome characterized by chronic pain and fatigue in conjunction with cognitive dysfunction such as memory difficulties. Patients currently face a difficult prognosis with limited treatment options and a diminished quality of life. Given its widespread use and potential efficacy in treating other types of pain, cannabis may prove to be an effective treatment for fibromyalgia. This review aims to examine and discuss current clinical evidence regarding the use of cannabis for the treatment of fibromyalgia. An electronic search was conducted on MEDLINE, EMBASE, Cochrane Central Register of Controlled Trials, Cochrane Database of Systematic Reviews, and Scopus using Medical Subject Heading (MeSH) terms on all literature published up to October 2022. A follow-up manual search included a complete verification of relevant studies. The results of four randomized controlled trials (RCTs) and five observational studies (a total of 564 patients) that investigated the effects of cannabis on fibromyalgia symptoms were included in this review. Of the RCTs, only one demonstrated that cannabinoids did not have a different effect than placebo on pain responses. Overall, this analysis shows low-quality evidence supporting short-term pain reduction in people with fibromyalgia treated with cannabinoid therapeutics. Although current evidence is limited, medical cannabis appears to be a safe alternative for treating fibromyalgia.
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Affiliation(s)
- Natalie H Strand
- Department of Anesthesiology and Perioperative Medicine, Mayo Clinic, Phoenix, AZ 85050, USA
| | - Jillian Maloney
- Department of Anesthesiology and Perioperative Medicine, Mayo Clinic, Phoenix, AZ 85050, USA
| | - Molly Kraus
- Department of Anesthesiology and Perioperative Medicine, Mayo Clinic, Phoenix, AZ 85050, USA
| | - Christopher Wie
- Department of Anesthesiology and Perioperative Medicine, Mayo Clinic, Phoenix, AZ 85050, USA
| | | | - Diego A Gomez
- Mayo Clinic Alix School of Medicine, Phoenix, AZ 85050, USA
| | | | - Monica W Harbell
- Department of Anesthesiology and Perioperative Medicine, Mayo Clinic, Phoenix, AZ 85050, USA
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Dekeseredy P, Brownstein H, Haggerty T, Sedney CL. Using Medical Cannabis for Chronic Pain: A Social-Ecological Framework. Cannabis Cannabinoid Res 2023. [PMID: 37155681 DOI: 10.1089/can.2023.0016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/10/2023] Open
Abstract
Early studies suggest medical cannabis (MC) has the potential to benefit people who suffer from chronic pain by offering a less addictive alternative to opioids; however, most investigators agree more research is indicated. Today, in 2023, cannabis remains a Schedule I drug and is an illegal substance in the United States under the Controlled Substances Act of 1970. Despite this designation, as of February 2022, 37 states, three territories, and the District of Columbia allowed using cannabis products to treat certain painful medical conditions. The contradictory status of federal and state legislation regarding cannabis use has resulted in delays and restrictions on relevant research. As a result, an inadequate foundation of knowledge exists needed to inform policy, program, and practice decisions concerning MC to treat pain. Implementing and controlling access to MC is influenced by overlapping individual, interpersonal, community, and organizational influences that all fall under the umbrella of federal and state policies. Increasingly, the legalization and expanded access to MC necessitates the integration of evidence, policy, and social-ecological reality. To adequately delineate these complex factors to anticipate and plan future interventions at multiple levels, we propose a social-ecological framework (SEF) for using MC to treat pain. This SEF assumes the transactional relationship between the individual and the environment and that no single factor can predict behavior or health outcomes. Our framework illustrates five dynamic levels of analysis that interact between dimensions. Key elements and intersections are discussed at the intrapersonal, interpersonal, institutional, community, and policy levels.
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Affiliation(s)
- Patricia Dekeseredy
- Department of Neurosurgery, Rockefeller Neuroscience Institute, West Virginia University, Morgantown, West Virginia, USA
| | - Henry Brownstein
- Sociology and Anthropology, West Virginia University, Morgantown, West Virginia, USA
| | - Treah Haggerty
- Department of Family Medicine, West Virginia University, Morgantown, West Virginia, USA
| | - Cara L Sedney
- Department of Neurosurgery, Rockefeller Neuroscience Institute, West Virginia University, Morgantown, West Virginia, USA
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Kuhathasan N, Ballester PL, Minuzzi L, MacKillop J, Frey BN. Predictors of perceived symptom change with acute cannabis use for mental health conditions in a naturalistic sample: A machine learning approach. Compr Psychiatry 2023; 122:152377. [PMID: 36787672 DOI: 10.1016/j.comppsych.2023.152377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/25/2022] [Revised: 01/31/2023] [Accepted: 02/07/2023] [Indexed: 02/11/2023] Open
Abstract
BACKGROUND Despite limited clinical evidence of its efficacy, cannabis use has been commonly reported for the management of various mental health concerns in naturalistic field studies. The aim of the current study was to use machine learning methods to investigate predictors of perceived symptom change across various mental health symptoms with acute cannabis use in a large naturalistic sample. METHODS Data from 68,819 unique observations of cannabis use from 1307 individuals using cannabis to manage mental health symptoms were analyzed. Data were extracted from Strainprint®, a mobile app that allows users to monitor their cannabis use for therapeutic purposes. Machine learning models were employed to predict self-perceived symptom change after cannabis use, and SHapley Additive exPlanations (SHAP) value plots were used to assess feature importance of individual predictors in the model. Interaction effects of symptom severity pre-scores of anxiety, depression, insomnia, and gender were also examined. RESULTS The factors that were most strongly associated with perceived symptom change following acute cannabis use were pre-symptom severity, age, gender, and the ratio of CBD to THC. Further examination on the impact of baseline severity for the most commonly reported symptoms revealed distinct responses, with cannabis being reported to more likely benefit individuals with lower pre-symptom severity for depression, and higher pre-symptom severity for insomnia. Responses to cannabis use also differed between genders. CONCLUSIONS Findings from this study highlight the importance of several factors in predicting perceived symptom change with acute cannabis use for mental health symptom management. Mental health profiles and baseline symptom severity may play a large role in perceived responses to cannabis. Distinct response patterns were also noted across commonly reported mental health symptoms, emphasizing the need for placebo-controlled cannabis trials for specific user profiles.
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Affiliation(s)
- Nirushi Kuhathasan
- Mood Disorders Program and Women's Health Concerns Clinic, St. Joseph's Healthcare Hamilton, 100 West 5th Street, Hamilton, ON L8N 3K7, Canada; Michael G. DeGroote Centre for Medicinal Cannabis Research, McMaster University, 100 West 5th Street, Hamilton, ON L8N 3K7, Canada; Department of Psychiatry and Behavioural Neurosciences, McMaster University, 100 West 5th Street, Hamilton, ON L8N 3K7, Canada
| | - Pedro L Ballester
- Mood Disorders Program and Women's Health Concerns Clinic, St. Joseph's Healthcare Hamilton, 100 West 5th Street, Hamilton, ON L8N 3K7, Canada; Department of Psychiatry and Behavioural Neurosciences, McMaster University, 100 West 5th Street, Hamilton, ON L8N 3K7, Canada
| | - Luciano Minuzzi
- Mood Disorders Program and Women's Health Concerns Clinic, St. Joseph's Healthcare Hamilton, 100 West 5th Street, Hamilton, ON L8N 3K7, Canada; Department of Psychiatry and Behavioural Neurosciences, McMaster University, 100 West 5th Street, Hamilton, ON L8N 3K7, Canada
| | - James MacKillop
- Michael G. DeGroote Centre for Medicinal Cannabis Research, McMaster University, 100 West 5th Street, Hamilton, ON L8N 3K7, Canada; Department of Psychiatry and Behavioural Neurosciences, McMaster University, 100 West 5th Street, Hamilton, ON L8N 3K7, Canada; Peter Boris Centre for Addictions Research, McMaster University/St. Joseph's Healthcare Hamilton, 100 West 5th Street, Hamilton, ON L8N 3K7, Canada
| | - Benicio N Frey
- Mood Disorders Program and Women's Health Concerns Clinic, St. Joseph's Healthcare Hamilton, 100 West 5th Street, Hamilton, ON L8N 3K7, Canada; Michael G. DeGroote Centre for Medicinal Cannabis Research, McMaster University, 100 West 5th Street, Hamilton, ON L8N 3K7, Canada; Department of Psychiatry and Behavioural Neurosciences, McMaster University, 100 West 5th Street, Hamilton, ON L8N 3K7, Canada.
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Tervo-Clemmens B, Schmitt W, Wheeler G, Cooke ME, Schuster RM, Hickey S, Pachas GN, Evins AE, Gilman JM. Cannabis use and sleep quality in daily life: An electronic daily diary study of adults starting cannabis for health concerns. Drug Alcohol Depend 2023; 243:109760. [PMID: 36638745 PMCID: PMC10015315 DOI: 10.1016/j.drugalcdep.2022.109760] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Revised: 12/07/2022] [Accepted: 12/26/2022] [Indexed: 12/31/2022]
Abstract
BACKGROUND Real world patterns of cannabis use for health concerns are highly variable and rarely overseen by a physician. Pragmatic effectiveness studies with electronic daily diaries that capture person-specific patterns of cannabis use and health symptoms may help clarify risks and benefits. METHODS As part of a larger, randomized trial (NCT03224468), adults (N = 181) seeking cannabis for insomnia, pain, or anxiety or depressive symptoms were randomized to obtain a medical cannabis card immediately (MCC) or a waitlist control (WLC) and completed 12-weeks of daily web-based surveys on cannabis use and sleep, pain, and depressive symptoms. RESULTS Completion rates of daily surveys were moderate to high (median completed: 72 out of 90 days). Daily reports of cannabis use were consistent with monthly interview assessments and urinalysis. The MCC group increased cannabis use frequency in the 12 weeks following randomization, while WLC did not. Among the MCC group, self-reported sleep quality was significantly higher on cannabis use days, compared to nonuse days. The MCC group displayed long-term sleep improvements, consistent with increasing cannabis frequency. No improvements were found for pain or depressive symptoms. CONCLUSION Cannabis use is associated with same day improvements in self-reported sleep quality, but not pain or depressive symptoms, although sleep improvements occurred in the context of increased frequency of cannabis use, raising the risk for cannabis use disorder. Daily web-based assessments of cannabis appear valid and feasible in adults seeking cannabis for health concerns, providing a flexible, complementary method for future real-world effectiveness studies with expanded and objective measures.
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Affiliation(s)
- Brenden Tervo-Clemmens
- Center for Addiction Medicine, Department of Psychiatry, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA.
| | - William Schmitt
- Center for Addiction Medicine, Department of Psychiatry, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
| | - Grace Wheeler
- Center for Addiction Medicine, Department of Psychiatry, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
| | - Megan E Cooke
- Center for Addiction Medicine, Department of Psychiatry, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
| | - Randi M Schuster
- Center for Addiction Medicine, Department of Psychiatry, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
| | - Sarah Hickey
- Center for Addiction Medicine, Department of Psychiatry, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
| | - Gladys N Pachas
- Center for Addiction Medicine, Department of Psychiatry, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
| | - A Eden Evins
- Center for Addiction Medicine, Department of Psychiatry, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
| | - Jodi M Gilman
- Center for Addiction Medicine, Department of Psychiatry, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
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40
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Sopovski DS, Han J, Stevens-Riley M, Wang Q, Erickson BD, Oktem B, Vanlandingham M, Taylor CL, Foley SL. Investigation of microorganisms in cannabis after heating in a commercial vaporizer. Front Cell Infect Microbiol 2023; 12:1051272. [PMID: 36710966 PMCID: PMC9880168 DOI: 10.3389/fcimb.2022.1051272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Accepted: 12/28/2022] [Indexed: 01/15/2023] Open
Abstract
Introduction There are concerns about microorganisms present on cannabis materials used in clinical settings by individuals whose health status is already compromised and are likely more susceptible to opportunistic infections from microbial populations present on the materials. Most concerning is administration by inhalation where cannabis plant material is heated in a vaporizer, aerosolized, and inhaled to receive the bioactive ingredients. Heating to high temperatures is known to kill microorganisms including bacteria and fungi; however, microbial death is dependent upon exposure time and temperature. It is unknown whether the heating of cannabis at temperatures and times designated by a commercial vaporizer utilized in clinical settings will significantly decrease the microbial loads in cannabis plant material. Methods To assess this question, bulk cannabis plant material supplied by National Institute on Drug Abuse (NIDA) was used to assess the impact of heating by a commercial vaporizer. Initial method development studies using a cannabis placebo spiked with Escherichia coli were performed to optimize culture and recovery parameters. Subsequent studies were carried out using the cannabis placebo, low delta-9 tetrahydrocannabinol (THC) potency and high THC potency cannabis materials exposed to either no heat or heating for 30 or 70 seconds at 190°C. Phosphate-buffered saline was added to the samples and the samples agitated to suspend the microorganism. Microbial growth after no heat or heating was evaluated by plating on growth media and determining the total aerobic microbial counts and total yeast and mold counts. Results and discussion Overall, while there were trends of reductions in microbial counts with heating, these reductions were not statistically significant, indicating that heating using standard vaporization parameters of 70 seconds at 190°C may not eliminate the existing microbial bioburden, including any opportunistic pathogens. When cultured organisms were identified by DNA sequence analyses, several fungal and bacterial taxa were detected in the different products that have been associated with opportunistic infections or allergic reactions including Enterobacteriaceae, Staphylococcus, Pseudomonas, and Aspergillus.
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Affiliation(s)
- Danielle S. Sopovski
- Division of Microbiology, Food and Drug Administration (FDA) National Center for Toxicological Research, Jefferson, AR, United States
| | - Jing Han
- Division of Microbiology, Food and Drug Administration (FDA) National Center for Toxicological Research, Jefferson, AR, United States
| | - Marla Stevens-Riley
- Office of Pharmaceutical Quality, Food and Drug Administration (FDA) Center for Drug Evaluation and Research, Silver Spring, MD, United States
| | - Qiang Wang
- Office of Pharmaceutical Quality, Food and Drug Administration (FDA) Center for Drug Evaluation and Research, Silver Spring, MD, United States
| | - Bruce D. Erickson
- Division of Microbiology, Food and Drug Administration (FDA) National Center for Toxicological Research, Jefferson, AR, United States
| | - Berk Oktem
- Office of Science and Engineering Laboratories, Food and Drug Administration (FDA) Center for Devices and Radiological Health, Silver Spring, MD, United States
| | - Michelle Vanlandingham
- Division of Biochemical Toxicology, Food and Drug Administration (FDA) National Center for Toxicological Research, Jefferson, AR, United States
| | - Cassandra L. Taylor
- Office of Pharmaceutical Quality, Food and Drug Administration (FDA) Center for Drug Evaluation and Research, Silver Spring, MD, United States,*Correspondence: Cassandra L. Taylor, ; Steven L. Foley,
| | - Steven L. Foley
- Division of Microbiology, Food and Drug Administration (FDA) National Center for Toxicological Research, Jefferson, AR, United States,*Correspondence: Cassandra L. Taylor, ; Steven L. Foley,
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Tsampoula I, Zartaloudi A, Dousis E, Koutelekos I, Pavlatou N, Toulia G, Kalogianni A, Polikandrioti M. Quality of Life in Patients Receiving Medical Cannabis. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2023; 1425:401-415. [PMID: 37581814 DOI: 10.1007/978-3-031-31986-0_39] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/16/2023]
Abstract
INTRODUCTION Medical cannabis has been used to relieve the symptoms of people with various chronic diseases. Despite of this, it has been stigmatized, even after its legalization in many countries. AIM The purpose of this study was to investigate the quality of life of patients receiving medical cannabis. MATERIAL AND METHOD One hundred patients receiving medical cannabis were given (a) a socio-demographic and clinical questionnaire, and (b) the SF-36 Health Survey scale for assessing quality of life. RESULTS The majority of our patients who received medical cannabis to treat their neurological disorders (58%) reported decrease in their symptoms (96%), better energy and vitality (68%), ability to perform their professional duties (88%), and an improvement in sleeping and appetite (79% and 71%, respectively) after receiving medical cannabis. Our participants exhibited very few restrictions in activities due to emotional difficulties, a moderate general health status as well as moderate vitality and energy. Participants, who reported a longer period of receiving medical cannabis, reported statistically significant more energy and vitality (p = 0.000), but also better mental (p = 0.000) and general health status (p = 0.001). Furthermore, the majority of patients have disclosed medical cannabis use to their family members (85%) and enjoyed their support (93%), but they haven't revealed their medication treatment to their social environment (81%). CONCLUSIONS Appropriate knowledge could significantly help health professionals in the field of planning and implementation of personalized nursing care in order to achieve optimal therapeutic outcomes.
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Affiliation(s)
- Iliana Tsampoula
- Department of Nursing, University of West Attica, Athens, Greece
| | | | - Evangelos Dousis
- Department of Nursing, University of West Attica, Athens, Greece
| | | | - Niki Pavlatou
- Department of Nursing, University of West Attica, Athens, Greece
| | - Georgia Toulia
- Department of Nursing, University of West Attica, Athens, Greece
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Olson J, Brophy H, Turk T, Jones A, Yamamoto SS, Yacyshyn E, Sadowski CA, Paul P. Perceptions of Cannabis Use: A Qualitative Descriptive Study of Rheumatology Patients. J Prim Care Community Health 2023; 14:21501319231194974. [PMID: 37632365 PMCID: PMC10467286 DOI: 10.1177/21501319231194974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 07/24/2023] [Accepted: 07/26/2023] [Indexed: 08/28/2023] Open
Abstract
INTRODUCTION/OBJECTIVES Some rheumatology patients use or contemplate using cannabis, however, may not be transparent about use with their providers. The objective of this qualitative descriptive study was to describe beliefs, perceptions, and learning needs of adults with rheumatic conditions regarding the use of cannabis products. METHODS Purposive sampling was conducted through a rheumatology clinic and sought participants who were using or thinking about using cannabis. Two online focus groups based on cannabis use patterns (non-users and users) were conducted separately. Interviews were audio recorded and transcribed. Three research team members read the transcripts independently to identify initial codes and themes. Data saturation was reached with the interviews. RESULTS We recruited 12 participants between 52 and 85 years old. The first theme was pain and desperation. Stigma was the second theme with a perception of physician opposition to cannabis, and the reluctance of many participants to discuss cannabis use with physicians. The final theme was a need for information and a general lack of trustworthy and credible sources. Users were willing to try cannabis even if they still had questions. CONCLUSION Rheumatology patients are open to using cannabis due to the burden and suffering associated with pain. They remain silent on the topic, however, because of stigma and lack of engagement from health care professionals, particularly physicians. Patients voiced a strong need for information regarding cannabis and want healthcare providers to initiate discussion. These findings are clinically relevant to the management of rheumatic conditions and the promotion of therapeutic relationships.
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Affiliation(s)
| | | | - Tarek Turk
- University of Alberta, Edmonton, AB, Canada
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Nicholas M, Erridge S, Bapir L, Pillai M, Dalavaye N, Holvey C, Coomber R, Rucker JJ, Weatherall MW, Sodergren MH. UK medical cannabis registry: assessment of clinical outcomes in patients with headache disorders. Expert Rev Neurother 2023; 23:85-96. [PMID: 36722292 DOI: 10.1080/14737175.2023.2174017] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
OBJECTIVES Headache disorders are a common cause of disability and reduced health-related quality of life globally. Growing evidence supports the use of cannabis-based medicinal products (CBMPs) for chronic pain; however, a paucity of research specifically focuses on CBMPs' efficacy and safety in headache disorders. This study aims to assess changes in validated patient-reported outcome measures (PROMs) in patients with headaches prescribed CBMPs and investigate the clinical safety in this population. METHODS A case series of the UK Medical Cannabis Registry was conducted. Primary outcomes were changes from baseline in PROMs (Headache Impact Test-6 (HIT-6), Migraine Disability Assessment (MIDAS), EQ-5D-5L, Generalized Anxiety Disorder-7 (GAD-7) questionnaire and Single-Item Sleep Quality Scale (SQS)) at 1-, 3-, and 6-months follow-up. P-values <0.050 were deemed statistically significant. RESULTS Ninety-seven patients were identified for inclusion. Improvements in HIT-6, MIDAS, EQ-5D-5L and SQS were observed at 1-, 3-, and 6-months (p < 0.005) follow-up. GAD-7 improved at 1- and 3-months (p < 0.050). Seventeen (17.5%) patients experienced a total of 113 (116.5%) adverse events. CONCLUSION Improvements in headache/migraine-specific PROMs and general health-related quality of life were associated with the initiation of CBMPs in patients with headache disorders. Cautious interpretation of results is necessary, and randomized control trials are required to ascertain causality.
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Affiliation(s)
- Martha Nicholas
- Imperial College Medical Cannabis Research Group, Department of Surgery and Cancer, Imperial College London, London, UK
| | - Simon Erridge
- Imperial College Medical Cannabis Research Group, Department of Surgery and Cancer, Imperial College London, London, UK.,Department of Medicine, Sapphire Medical Clinics, London, UK
| | - Lara Bapir
- Imperial College Medical Cannabis Research Group, Department of Surgery and Cancer, Imperial College London, London, UK
| | - Manaswini Pillai
- Imperial College Medical Cannabis Research Group, Department of Surgery and Cancer, Imperial College London, London, UK
| | - Nishaanth Dalavaye
- Imperial College Medical Cannabis Research Group, Department of Surgery and Cancer, Imperial College London, London, UK
| | - Carl Holvey
- Department of Medicine, Sapphire Medical Clinics, London, UK
| | - Ross Coomber
- Department of Medicine, Sapphire Medical Clinics, London, UK.,Department of Trauma and Orthopaedics, St. George's Hospital NHS Trust, London, UK
| | - James J Rucker
- Department of Medicine, Sapphire Medical Clinics, London, UK.,Department of Psychological Medicine, Kings College London, London, UK.,Centre for Affective Disorders, South London & Maudsley NHS Foundation Trust, London, UK
| | - Mark W Weatherall
- Department of Medicine, Sapphire Medical Clinics, London, UK.,Department of Neurology, Buckinghamshire Healthcare NHS Trust, Amersham, UK
| | - Mikael H Sodergren
- Imperial College Medical Cannabis Research Group, Department of Surgery and Cancer, Imperial College London, London, UK.,Department of Medicine, Sapphire Medical Clinics, London, UK
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Josifovska I, Stefkov G, Cvetkovikj Karanfilova I, K. Nestorovska A, Grozdanova A, Sterjev Z, Naumovska Z. Post marketing surveillance of cannabis-based preparations. MAKEDONSKO FARMACEVTSKI BILTEN 2022. [DOI: 10.33320/maced.pharm.bull.2022.68.04.061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Affiliation(s)
- Ivana Josifovska
- Varus DOOEL, Faculty of Pharmacy, University “Ss. Cyril and Methodius”, North Macedonia
| | - Gjoshe Stefkov
- Institute of Pharmacognosy, Faculty of Pharmacy, University “Ss. Cyril and Methodius”, Majka Tereza 47, 1000 Skopje, Republic of N. Macedonia
| | - Ivana Cvetkovikj Karanfilova
- Institute of Pharmacognosy, Faculty of Pharmacy, University “Ss. Cyril and Methodius”, Majka Tereza 47, 1000 Skopje, Republic of N. Macedonia
| | - Aleksandra K. Nestorovska
- Institute of Pharmaceutical chemistry, Faculty of Pharmacy, University “Ss. Cyril and Methodius”, Majka Tereza 47, 1000 Skopje, Republic of N. Macedonia
| | - Aleksandra Grozdanova
- Institute of Pharmaceutical chemistry, Faculty of Pharmacy, University “Ss. Cyril and Methodius”, Majka Tereza 47, 1000 Skopje, Republic of N. Macedonia
| | - Zoran Sterjev
- Institute of Pharmaceutical chemistry, Faculty of Pharmacy, University “Ss. Cyril and Methodius”, Majka Tereza 47, 1000 Skopje, Republic of N. Macedonia
| | - Zorica Naumovska
- Institute of Pharmaceutical chemistry, Faculty of Pharmacy, University “Ss. Cyril and Methodius”, Majka Tereza 47, 1000 Skopje, Republic of N. Macedonia
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Kalaba M, Ware MA. Cannabinoid Profiles in Medical Cannabis Users: Effects of Age, Gender, Symptoms, and Duration of Use. Cannabis Cannabinoid Res 2022; 7:840-851. [PMID: 33999649 PMCID: PMC9784598 DOI: 10.1089/can.2020.0120] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
Introduction: Clinical trials remain the gold standard for evaluating efficacy, but there is increasing interest in using real-world evidence (RWE) to inform health care decision making. The aims of this observational study were to describe patterns of medical cannabis use, associated changes in symptom severity over time, and to evaluate change in cannabis dose over time for pain-related symptoms. Methods: Data were collected by Strainprint™, an application that is HIPAA, PIPEDA, and PHIPA compliant. A total of 629 participants recorded data between May 2017 and August 2019. A total of 65 symptoms were grouped as Pain, Mental Health, Physical Symptoms, Seizures, Headaches/Migraines, and Other. Descriptive statistics and mixed-effects modeling were applied. Results: THC-dominant products were more frequently consumed for symptoms of pain and sleep, while CBD-dominant products were more frequently consumed for anxiety and depression. Male and female participants demonstrated significant differences in the type of cannabis they consumed. Females more frequently consumed CBD-dominant products, and males more frequently consumed balanced (THC:CBD) products. Oil use was more prominent among females, while vaping was more common among males. Product use also varied by age tertiles (<31; 31-39; >40 years). CBD-dominant products were more common among younger participants, <31 years, THC-dominant products were more common among the 31-39 years category and balanced (THC:CBD) products were common among older participants >41 years. Dosages of CBD-dominant and balanced (THC:CBD) products increased over time irrespective of symptom response. THC-dominant products demonstrated a significant relationship between dose and symptom reduction over time. Conclusions: Recognizing that RWE has important methodological limitations, we observed cannabis product preferences based on demographic characteristics, such as gender and age and the primary symptom treated such as pain and anxiety. Our study offers real-world insights into how participants use and respond to cannabis products and suggests important avenues and methodologies for future research.
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Affiliation(s)
- Maja Kalaba
- Canopy Growth Corporation, Smiths Falls, Ontario, Canada.,Address correspondence to: Maja Kalaba, MPH, Canopy Growth Corporation, 1 Hershey Drive, Smiths Falls, ON K7A 0A8, Canada,
| | - Mark A. Ware
- Canopy Growth Corporation, Smiths Falls, Ontario, Canada
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Lichenstein SD. THC, CBD, and Anxiety: A review of recent findings on the anxiolytic and anxiogenic effects of cannabis' primary cannabinoids. CURRENT ADDICTION REPORTS 2022; 9:473-485. [PMID: 38106452 PMCID: PMC10722902 DOI: 10.1007/s40429-022-00450-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/11/2022] [Indexed: 11/29/2022]
Abstract
Purpose of review In the context of ongoing decriminalization and legalization of cannabis, a better understanding of how THC and CBD impact anxiety is critical to elucidate the risks of recreational cannabis use as well as to establish the therapeutic potential of cannabis products for anxiety-related applications. Recent findings Recent literature supports anxiogenic effects of THC administration, which may be attenuated among regular cannabis users. Data regarding anxiolytic effects of CBD administration are mixed. Most newer studies contradict earlier findings in reporting no effects of CBD on anxiety in healthy participants, whereas inconsistent results have been reported among individuals with anxiety disorders, substance use disorders, and other clinical populations. Summary Future research is needed to reconcile heterogenous findings, explore sex differences in the effects of THC and CBD on anxiety, as well as to assess how effects change with extended exposure, the impact of different CBD doses, and interactions between THC, CBD, and other cannabis compounds.
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Carlini BH, Schauer GL. Cannabis-only use in the USA: prevalence, demographics, use patterns, and health indicators. J Cannabis Res 2022; 4:39. [PMID: 35864553 PMCID: PMC9306107 DOI: 10.1186/s42238-022-00143-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Accepted: 06/24/2022] [Indexed: 12/04/2022] Open
Abstract
Background The prevalence of adults who consume cannabis while abstaining from other substances is not known in the USA. This study used nationally representative data to estimate the prevalence and explore the demographic characteristics, cannabis use behaviors, and self-reported health of US adults with past 30-day cannabis-only use, as compared with adults who used cannabis as well as other substances. Methods Data came from adults 18 years and older who responded to the 2017 or 2018 National Survey on Drug Use and Health and reported past 30-day cannabis use (n = 12,143). Cannabis-only use was defined as past 30-day cannabis use with no past 30-day use of other substances (alcohol, tobacco, other illicit substances, non-prescribed controlled medications). Weighted frequencies and 95% confidence intervals (CI) were computed for all sociodemographic and cannabis-related variables, overall, and across the two categories of cannabis consumers, stratified by age. Results The prevalence of past 30-day cannabis-only use among US adults was 0.9% (95% CI: 0.8, 1.0) and varied by age (2.0% of 18–25 years old; 0.7% of 26–49 year olds, and 0.6% of those ≥ 50 years). Among adults with any past 30-day cannabis use, 8.4% (95% CI: 7.6, 9.2; n = 980) reported cannabis-only use. Age was significantly associated with past 30-day cannabis-only use, with adults 18–25 years and 26–49 years having higher odds of cannabis-only use compared with older adults. Past year cannabis dependence was lowest among cannabis-only consumers aged ≥ 50 years (0.2%; 95% CI: 0.1, 0.5) and highest among young adult cannabis and other substance consumers (16.7%; 95% CI: 15.3, 18.2). Past year prevalence of any mental illness was generally similar across cannabis use groups and by age. Conclusions The prevalence of adult cannabis-only use in the US is low — most cannabis consumers report using other substances in the past 30 days as well. While cannabis-only use among older adults is rare, it does not appear to be accompanied by a high prevalence of dependence. These findings should guide future research and policymaking.
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Andrews CN, Rehak R, Woo M, Walker I, Ma C, Forbes N, Rittenbach K, Hathaway J, Wilsack L, Liu A, Nasser Y, Sharkey KA. Cannabinoid hyperemesis syndrome in North America: evaluation of health burden and treatment prevalence. Aliment Pharmacol Ther 2022; 56:1532-1542. [PMID: 36307209 DOI: 10.1111/apt.17265] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Revised: 06/16/2022] [Accepted: 10/11/2022] [Indexed: 01/30/2023]
Abstract
BACKGROUND Cannabinoid hyperemesis syndrome (CHS) is a poorly understood vomiting disorder associated with chronic cannabis use. AIMS To characterise patients experiencing CHS in North America and to obtain a population-based estimate of CHS treatment prevalence in Canada before and during the Covid-19 pandemic METHODS: Internet survey of 157 CHS sufferers in Canada and the United States. Administrative health databases for the province of Alberta (population 5 million) were accessed to measure emergency department (ED) visits for vomiting, with a concurrent diagnostic code for cannabis use. Three time periods of 1 year were assessed: prior to recreational cannabis legalisation (2017-2018), after recreational legalisation (2018-2019) and during the first year of the Covid-19 pandemic (2020-2021). RESULTS Problematic cannabis use (defined as a CUDIT-R score ≥8) was universal among the survey cohort, and 59% and 68% screening for moderate or worse anxiety or depression, respectively. The overall treatment prevalence of CHS across all ages increased from 15 ED visits per 100,000 population (95% CI, 14-17) prior to legalisation, to 21 (95% CI, 20-23) after legalisation, to 32 (95% CI, 31-35) during the beginning of the Covid-19 pandemic (p < 0.001). Treatment prevalence among chronic cannabis users was as high as 6 per 1000 in the 16-24 age group. CONCLUSION Survey data suggest patients with CHS almost universally suffer from a cannabis use disorder, which has significant treatment implications. Treatment prevalence in the ED has increased substantially over a very short time period, with the highest rates seen during the Covid-19 pandemic.
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Affiliation(s)
- Christopher N Andrews
- Division of Gastroenterology and Hepatology, Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada.,Snyder Institute for Chronic Diseases, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Renata Rehak
- Division of Gastroenterology and Hepatology, Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Matthew Woo
- Division of Gastroenterology and Hepatology, Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Ian Walker
- Department of Emergency Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Christopher Ma
- Division of Gastroenterology and Hepatology, Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada.,Department of Community Health Sciences, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Nauzer Forbes
- Division of Gastroenterology and Hepatology, Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada.,Department of Community Health Sciences, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Katherine Rittenbach
- Provincial Addiction and Mental Health Portfolio™, Alberta Health Services, Calgary, Alberta, Canada.,Department of Psychiatry, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Joshua Hathaway
- Alberta Health Services/CRISM Prairies, CRISM-AHS Advancement of Analytics in Substance Use, Edmonton, Alberta, Canada
| | - Lynn Wilsack
- Division of Gastroenterology and Hepatology, Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Andy Liu
- Division of Digestive and Liver Diseases, Columbia University Medical Centre, New York, New York City, USA
| | - Yasmin Nasser
- Division of Gastroenterology and Hepatology, Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada.,Snyder Institute for Chronic Diseases, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Keith A Sharkey
- Snyder Institute for Chronic Diseases, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada.,Hotchkiss Brain Institute, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada.,Department of Physiology and Pharmacology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
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Narayan AJ, Downey LA, Manning B, Hayley AC. Cannabinoid treatments for anxiety: A systematic review and consideration of the impact of sleep disturbance. Neurosci Biobehav Rev 2022. [DOI: https:/doi.org.ezproxy.mnsu.edu/10.1016/j.neubiorev.2022.104941] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/01/2023]
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Velzeboer R, Malas A, Boerkoel P, Cullen K, Hawkins M, Roesler J, Lai WWK. Cannabis dosing and administration for sleep: a systematic review. Sleep 2022; 45:6701617. [PMID: 36107800 DOI: 10.1093/sleep/zsac218] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Revised: 09/01/2022] [Indexed: 01/31/2023] Open
Abstract
STUDY OBJECTIVES As cannabis is increasingly used to treat sleep disorders, we performed a systematic review to examine the effects of cannabis on sleep and to guide cannabis prescribers in their recommendations to patients, specifically focusing on dosing. METHODS We searched EMBASE, Medline, and Web of Science and identified 4550 studies for screening. Five hundred sixty-eight studies were selected for full-text review and 31 were included for analysis. Study results were considered positive based on improvements in sleep architecture or subjective sleep quality. Bias in randomized controlled trials was assessed using Cochrane Risk of Bias tool 2.0. RESULTS Sleep improvements were seen in 7 out of 19 randomized studies and in 7 out of 12 uncontrolled trials. There were no significant differences between the effects of tetrahydrocannabinol and cannabidiol. Cannabis showed most promise at improving sleep in patients with pain-related disorders, as compared to those with neurologic, psychiatric, or sleep disorders, and showed no significant effects on healthy participants' sleep. While subjective improvements in sleep quality were often observed, diagnostic testing showed no improvements in sleep architecture. Adverse events included headaches, sedation, and dizziness, and occurred more frequently at higher doses, though no serious adverse events were observed. CONCLUSION High-quality evidence to support cannabis use for sleep remains limited. Heterogeneity in cannabis types, doses, timing of administration, and sleep outcome measures limit the ability to make specific dosing recommendations.
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Affiliation(s)
- Rob Velzeboer
- Clinical Research, Tranq Sleep Care , Kelowna, British Columbia, Canada
| | - Adeeb Malas
- Department of Psychiatry, Faculty of Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Pierre Boerkoel
- Faculty of Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Katie Cullen
- Faculty of Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Michelle Hawkins
- Faculty of Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Jordanna Roesler
- Department of Dermatology, Faculty of Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Wayne Wei-Ku Lai
- Medical Director, Tranq Sleep Care, Kelowna, British Columbia, Canada.,Faculty of Medicine, University of British Columbia, Vancouver, British Columbia, Canada
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