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Plöderl M, Pichler EM, Westerlund J, Niederseer D, Fartacek C. Daylight saving time was not associated with a change in suicide rates in Austria, Switzerland and Sweden. Eur J Public Health 2024:ckae061. [PMID: 38561196 DOI: 10.1093/eurpub/ckae061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/04/2024] Open
Abstract
BACKGROUND Some studies have reported an increase in suicides after the start of daylight saving time (DST), but the evidence is mixed and more research about proposed mechanisms (disrupted sleep, changing light exposure) is needed. METHODS In our preregistered study, we analyzed change in suicide rates in the 2 weeks before/after DST, based on data between 1980 and 2022 from Austria, Switzerland and Sweden, using Poisson regression models and changepoint analyses. To explore the impact of disrupted sleep, we repeated the analysis for retired people who are likely less bound to DST, and for younger people. To explore the effect of changed daylight exposure, we repeated the analysis for northern and southern regions because twilight and daylight exposure varies by latitude. RESULTS Suicide rates did not significantly increase after the start of DST (adjusted incidence rate ratio IRR = 0.98, 95% CI 0.91-1.06, P = 0.66, n = 13 362 suicides) or after DST ended (adjusted IRR = 0.99, 95% CI 0.91-1.07, P = 0.76, n = 12 319 suicides). There were no statistically significant findings among younger or older subgroups and also not in Sweden and Austria/Switzerland. No changepoints were detected. CONCLUSIONS There were no significant changes in suicide rates associated with DST and no clear evidence to support proposed mechanisms (light exposure, disruption of sleep). Our study is one of the largest and was adequately powered. Nonetheless, even larger studies to detect smaller effects could be important to inform the debate about harms and benefits of DST.
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Affiliation(s)
- Martin Plöderl
- Center for Inpatient Psychotherapy and Crisis Intervention, University Clinic for Psychiatry, Psychotherapy, and Psychosomatics, Paracelsus Medical University, Salzburg, Austria
| | - Eva-Maria Pichler
- Psychiatric Services Aargau AG, Psychiatry and Psychotherapy, Windisch, Switzerland
| | - Joakim Westerlund
- National Centre for Suicide Research and Prevention, Centre for Health Economics, Informatics and Health Services Research, Stockholm Health Care Services, Stockholm, Sweden
- Department of Psychology, Stockholm University, Stockholm, Sweden
| | - David Niederseer
- Hochgebirgsklinik, Medicine Campus Davos, Davos, Switzerland
- Christine Kühne Center for Allergy Research and Education (CK-CARE), Medicine Campus Davos, Davos, Switzerland
- University Heart Center, University Hospital Zurich, Zurich, Switzerland
| | - Clemens Fartacek
- Center for Inpatient Psychotherapy and Crisis Intervention, University Clinic for Psychiatry, Psychotherapy, and Psychosomatics, Paracelsus Medical University, Salzburg, Austria
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2
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Rishi MA, Cheng JY, Strang AR, Sexton-Radek K, Ganguly G, Licis A, Flynn-Evans EE, Berneking MW, Bhui R, Creamer J, Kundel V, Namen AM, Spector AR, Olaoye O, Hashmi SD, Abbasi-Feinberg F, Abreu AR, Gurubhagavatula I, Kapur VK, Kuhlmann D, Martin J, Olson E, Patil S, Rowley J, Shelgikar A, Trotti LM, Wickwire EM, Sullivan SS. Permanent standard time is the optimal choice for health and safety: an American Academy of Sleep Medicine position statement. J Clin Sleep Med 2024; 20:121-125. [PMID: 37904574 PMCID: PMC10758561 DOI: 10.5664/jcsm.10898] [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] [Received: 10/30/2023] [Accepted: 10/30/2023] [Indexed: 11/01/2023]
Abstract
The period of the year from spring to fall, when clocks in most parts of the United States are set one hour ahead of standard time, is called daylight saving time, and its beginning and ending dates and times are set by federal law. The human biological clock is regulated by the timing of light and darkness, which then dictates sleep and wake rhythms. In daily life, the timing of exposure to light is generally linked to the social clock. When the solar clock is misaligned with the social clock, desynchronization occurs between the internal circadian rhythm and the social clock. The yearly change between standard time and daylight saving time introduces this misalignment, which has been associated with risks to physical and mental health and safety, as well as risks to public health. In 2020, the American Academy of Sleep Medicine (AASM) published a position statement advocating for the elimination of seasonal time changes, suggesting that evidence best supports the adoption of year-round standard time. This updated statement cites new evidence and support for permanent standard time. It is the position of the AASM that the United States should eliminate seasonal time changes in favor of permanent standard time, which aligns best with human circadian biology. Evidence supports the distinct benefits of standard time for health and safety, while also underscoring the potential harms that result from seasonal time changes to and from daylight saving time. CITATION Rishi MA, Cheng JY, Strang AR, et al. Permanent standard time is the optimal choice for health and safety: an American Academy of Sleep Medicine position statement. J Clin Sleep Med. 2024;20(1):121-125.
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Affiliation(s)
| | | | - Abigail R. Strang
- Division of Pulmonary and Sleep Medicine, Nemours Children’s Hospital, Wilmington, Delaware
| | | | - Gautam Ganguly
- Neurology Consultants Medical Group, Whittier, California
| | - Amy Licis
- Department of Neurology, Washington University School of Medicine, St. Louis, Missouri
| | - Erin E. Flynn-Evans
- Fatigue Countermeasures Laboratory, Human Systems Integration Division, NASA Ames Research
| | | | - Raj Bhui
- University of British Columbia, Vancouver, British Columbia, Canada
| | - Jennifer Creamer
- Sleep Disorders Center at Walter Reed National Military Medical Center, Bethesda, Maryland
| | - Vaishnavi Kundel
- Division of Pulmonary, Critical Care, and Sleep Medicine, Icahn School of Medicine at Mount Sinai, New York, New York
| | | | - Andrew R. Spector
- Department of Neurology, Duke University School of Medicine, Durham, North Carolina
| | | | | | | | - Alexandre Rocha Abreu
- Miller School of Medicine/Universisty of Miami UHealth Sleep Program, Miami, Florida
| | - Indira Gurubhagavatula
- Division of Sleep Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
- Corporal Michael J. Crescenz Veterans Affairs Medical Center, Philadelphia, Pennsylvania
| | - Vishesh K. Kapur
- Division of Pulmonary Critical Care and Sleep Medicine, University of Washington, Seattle, Washington
| | - David Kuhlmann
- Sleep Medicine, Bothwell Regional Health Center, Sedalia, Missouri
| | - Jennifer Martin
- Geriatric Research, Education and Clinical Center, Veteran Affairs Greater Los Angeles Healthcare System, North Hills, California
- David Geffen School of Medicine at the University of California, Los Angeles, California
| | - Eric Olson
- Division of Pulmonary and Critical Care Medicine, Center for Sleep Medicine, Mayo Clinic, Rochester, Minnesota
| | - Susheel Patil
- Sleep Medicine Program, University Hospitals of Cleveland, Cleveland, Ohio
- Case Western Reserve University School of Medicine, Cleveland, Ohio
| | - James Rowley
- Rush University Medical Center, Chicago, Illinois
| | - Anita Shelgikar
- University of Michigan Sleep Disorders Center, University of Michigan, Ann Arbor, Michigan
| | - Lynn Marie Trotti
- Emory Sleep Center and Department of Neurology, Emory University School of Medicine, Atlanta, Georgia
| | - Emerson M. Wickwire
- Sleep Disorders Center, Division of Pulmonary and Critical Care Medicine, Department of Medicine, University of Maryland School of Medicine, Baltimore, Maryland
- Department of Psychiatry, University of Maryland School of Medicine, Baltimore, Maryland
| | - Shannon S. Sullivan
- Division of Pulmonary, Asthma, and Sleep Medicine, Department of Pediatrics, Stanford University School of Medicine, Palo Alto, California
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3
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Reis DJ, Yen P, Tizenberg B, Gottipati A, Postolache SY, De Riggs D, Nance M, Dagdag A, Plater L, Federline A, Grassmeyer R, Dagdag A, Akram F, Ozorio Dutra SV, Gragnoli C, RachBeisel JA, Volkov J, Bahraini NH, Stiller JW, Brenner LA, Postolache TT. Longitude-based time zone partitions and rates of suicide. J Affect Disord 2023; 339:933-942. [PMID: 37481129 PMCID: PMC10870927 DOI: 10.1016/j.jad.2023.07.080] [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: 02/03/2023] [Revised: 06/19/2023] [Accepted: 07/14/2023] [Indexed: 07/24/2023]
Abstract
BACKGROUND Increasing evidence suggests that conditions with decreased morning and increased evening light exposure, including shift work, daylight-saving time, and eveningness, are associated with elevated mortality and suicide risk. Given that the alignment between the astronomical, biological, and social time varies across a time zone, with later-shifted daylight exposure in the western partition, we hypothesized that western time zone partitions would have higher suicide rates than eastern partitions. METHODS United States (U.S.) county-level suicide and demographic data, from 2010 to 2018, were obtained from a Centers for Disease Control database. Using longitude and latitude, counties were sorted into the western, middle, or eastern partition of their respective time zones, as well as the northern and southern halves of the U.S. Linear regressions were used to estimate the associations between suicide rates and time zone partitions, adjusting for gender, race, ethnicity, age group, and unemployment rates. RESULTS Data were available for 2872 counties. Across the U.S., western partitions had statistically significantly higher rates of suicide compared to eastern partitions and averaged up to two additional yearly deaths per 100,000 people (p < .001). LIMITATIONS Ecological design and limited adjustment for socioeconomic factors. CONCLUSIONS To our knowledge, this is the first study of the relationship between longitude-based time zone partitions and suicide. The results were consistent with the hypothesized elevated suicide rates in the western partitions, and concordant with previous reports on cancer mortality and transportation fatalities. The next step is to retest the hypothesis with individual-level data, accounting for latitude, photoperiodic changes, daylight-saving time, geoclimatic variables, physical and mental health indicators, as well as socioeconomic adversity and protection.
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Affiliation(s)
- Daniel J Reis
- VA Rocky Mountain Mental Illness Research, Education, and Clinical Center for Veteran Suicide Prevention, Aurora, CO, USA; Department of Psychiatry, University of Colorado Anschutz Medical Campus, Aurora, CO, USA.
| | - Poyu Yen
- Mood and Anxiety Program, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Boris Tizenberg
- Mood and Anxiety Program, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Anurag Gottipati
- Mood and Anxiety Program, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Sonia Y Postolache
- Mood and Anxiety Program, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Demitria De Riggs
- VISN 5 Capitol Health Care Network Mental Illness Research Education and Clinical Center, Baltimore, MD, USA
| | - Morgan Nance
- VA Rocky Mountain Mental Illness Research, Education, and Clinical Center for Veteran Suicide Prevention, Aurora, CO, USA; Department of Physical Medicine and Rehabilitation, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Alexandra Dagdag
- Mood and Anxiety Program, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Lynn Plater
- VISN 5 Capitol Health Care Network Mental Illness Research Education and Clinical Center, Baltimore, MD, USA
| | - Amanda Federline
- VISN 5 Capitol Health Care Network Mental Illness Research Education and Clinical Center, Baltimore, MD, USA
| | - Riley Grassmeyer
- VA Rocky Mountain Mental Illness Research, Education, and Clinical Center for Veteran Suicide Prevention, Aurora, CO, USA
| | - Aline Dagdag
- Mood and Anxiety Program, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Faisal Akram
- Mood and Anxiety Program, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD, USA; Psychiatry Residency Training, Saint Elizabeth's Hospital, Department of Behavioral Health, Washington, DC, USA
| | | | - Claudia Gragnoli
- Department of Public Health Sciences, Penn State College of Medicine, Hershey, PA, USA; Division of Endocrinology, Department of Medicine, Creighton University School of Medicine, Omaha, NE, USA
| | - Jill A RachBeisel
- Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Janna Volkov
- Mood and Anxiety Program, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD, USA; Psychiatry Residency Training, Saint Elizabeth's Hospital, Department of Behavioral Health, Washington, DC, USA
| | - Nazanin H Bahraini
- VA Rocky Mountain Mental Illness Research, Education, and Clinical Center for Veteran Suicide Prevention, Aurora, CO, USA; Department of Psychiatry, University of Colorado Anschutz Medical Campus, Aurora, CO, USA; Department of Physical Medicine and Rehabilitation, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - John W Stiller
- Mood and Anxiety Program, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD, USA; Saint Elizabeth's Hospital, Neurology Consultation Service, Washington, DC, USA; Maryland State Athletic Commission, Baltimore, MD, USA
| | - Lisa A Brenner
- VA Rocky Mountain Mental Illness Research, Education, and Clinical Center for Veteran Suicide Prevention, Aurora, CO, USA; Department of Psychiatry, University of Colorado Anschutz Medical Campus, Aurora, CO, USA; Department of Physical Medicine and Rehabilitation, University of Colorado Anschutz Medical Campus, Aurora, CO, USA; Military and Veteran Microbiome: Consortium for Research and Education (MVM-CoRE), Denver, CO, USA
| | - Teodor T Postolache
- VA Rocky Mountain Mental Illness Research, Education, and Clinical Center for Veteran Suicide Prevention, Aurora, CO, USA; Mood and Anxiety Program, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD, USA; VISN 5 Capitol Health Care Network Mental Illness Research Education and Clinical Center, Baltimore, MD, USA; Military and Veteran Microbiome: Consortium for Research and Education (MVM-CoRE), Denver, CO, USA
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Lévy L, Robine JM, Rey G, Méndez Turrubiates RF, Quijal-Zamorano M, Achebak H, Ballester J, Rodó X, Herrmann FR. Daylight saving time affects European mortality patterns. Nat Commun 2022; 13:6906. [PMID: 36372798 PMCID: PMC9659560 DOI: 10.1038/s41467-022-34704-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2021] [Accepted: 11/03/2022] [Indexed: 11/15/2022] Open
Abstract
Daylight saving time (DST) consists in a one-hour advancement of legal time in spring offset by a backward transition of the same magnitude in fall. It creates a minimal circadian misalignment that could disrupt sleep and homoeostasis in susceptible individuals and lead to an increased incidence of pathologies and accidents during the weeks immediately following both transitions. How this shift affects mortality dynamics on a large population scale remains, however, unknown. This study examines the impact of DST on all-cause mortality in 16 European countries for the period 1998-2012. It shows that mortality decreases in spring and increases in fall during the first two weeks following each DST transition. Moreover, the alignment of time data around DST transition dates revealed a septadian mortality pattern (lowest on Sundays, highest on Mondays) that persists all-year round, irrespective of seasonal variations, in men and women aged above 40.
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Affiliation(s)
- Laurent Lévy
- Medical School of the University of Geneva, Geneva, Switzerland
| | - Jean-Marie Robine
- Institut National de la Santé et de la Recherche Médicale (INSERM), Montpellier, France
- École Pratique des Hautes Études, Paris, France
| | | | | | | | | | | | - Xavier Rodó
- ISGlobal, Barcelona, Spain
- Institució Catalana de Recerca i Estudis Avançats, Barcelona, Catalonia, Spain
| | - François R Herrmann
- Medical School of the University of Geneva, Geneva, Switzerland.
- Division of Geriatrics, Department of Rehabilitation and Geriatrics, Geneva University Hospitals, Thônex, Switzerland.
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5
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Phase Response Curve to Light under Ambulatory Conditions: A Pilot Study for Potential Application to Daylight Saving Time Transitions. BIOLOGY 2022; 11:biology11111584. [PMID: 36358285 PMCID: PMC9687529 DOI: 10.3390/biology11111584] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 10/17/2022] [Accepted: 10/25/2022] [Indexed: 01/25/2023]
Abstract
Several studies have investigated the relationship between daylight saving time (DST) and sleep alterations, psychiatric disorders, cardiovascular events and traffic accidents. However, very few have monitored participants while maintaining their usual lifestyle before and after DST. Considering that DST transitions modify human behavior and, therefore, people's light exposure patterns, the aim of this study was to investigate the potential effects of DST on circadian variables, considering sleep and, for the first time, the human phase response curve to light. To accomplish this, eight healthy adults (33 ± 11 years old, mean ± SD) were recruited to monitor multivariable circadian markers and light exposure by means of a wearable ambulatory monitoring device: Kronowise®. The following night phase markers were calculated: midpoints of the five consecutive hours of maximum wrist temperature (TM5) and the five consecutive hours of minimum time in movement (TL5), sleep onset and offset, as well as sleep duration and light intensity. TM5 for wrist temperature was set as circadian time 0 h, and the balance between advances and delays considering the phase response curve to light was calculated individually before and after both DST transitions. To assess internal desynchronization, the possible shift in TM5 for wrist temperature and TL5 for time in movement were compared. Our results indicate that the transition to DST seems to force the circadian system to produce a phase advance to adapt to the new time. However, the synchronizing signals provided by natural and personal light exposure are not in line with such an advance, which results in internal desynchronization and the need for longer synchronization times. On the contrary, the transition back to ST, which implies a phase delay, is characterized by a faster adaptation and maintenance of internal synchronization, despite the fact that exposure to natural light would favor a phase advance. Considering the pilot nature of this study, further research is needed with higher sample sizes.
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6
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Nixon A, De Koninck J, Greenham S, Robillard R, Boafo A. Psychiatric Admissions of Children and Adolescents Across School Periods and Daylight-Saving Transitions. JOURNAL OF THE CANADIAN ACADEMY OF CHILD AND ADOLESCENT PSYCHIATRY = JOURNAL DE L'ACADEMIE CANADIENNE DE PSYCHIATRIE DE L'ENFANT ET DE L'ADOLESCENT 2021; 30:226-235. [PMID: 34777506 PMCID: PMC8561854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Accepted: 06/30/2021] [Indexed: 06/13/2023]
Abstract
OBJECTIVES This study sought to examine fluctuations in admissions to a child and adolescent inpatient psychiatry unit in relation to school breaks, school starts, as well as time change transitions in and out of Daylight-Saving Time (DST). METHODS Five years (2012-2017) of youth inpatient admissions to a pediatric hospital in Ontario were retrieved (n=2,498). A sub-sample was grouped weekly, starting on the Sunday of each week for a total of 260 weekly time bins. The number of admissions during in and out of school periods, school starts in the fall and winter semester, and time change transitions were compared. RESULTS Admissions were significantly higher during school periods as opposed to out of school periods, and significantly increased from prior- to post-school starts. No significant difference in admission rates were found in and out of DST changes. Weekly time series analyses for DST changes and monthly time series analyses for school starts did not identify a significant seasonality in admissions. CONCLUSIONS These findings suggest that school periods and school onset may be significant stressors associated with an increased rate of psychiatric admissions. The presence of potential compensating factors is proposed to explain the lack of relationship between pedopsychiatric admissions and time change transitions.
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Affiliation(s)
- Ashley Nixon
- University of Ottawa Institute of Mental Health Research at the Royal, Ottawa, Ontario
- School of Psychology, University of Ottawa, Ottawa, Ontario
| | - Joseph De Koninck
- University of Ottawa Institute of Mental Health Research at the Royal, Ottawa, Ontario
- School of Psychology, University of Ottawa, Ottawa, Ontario
| | - Stephanie Greenham
- School of Psychology, University of Ottawa, Ottawa, Ontario
- CHEO Research Institute, Children's Hospital of Eastern Ontario, Ottawa, Ontario
- Mental Health Program, Children's Hospital of Eastern Ontario, Ottawa, Ontario
| | - Rebecca Robillard
- University of Ottawa Institute of Mental Health Research at the Royal, Ottawa, Ontario
- School of Psychology, University of Ottawa, Ottawa, Ontario
| | - Addo Boafo
- University of Ottawa Institute of Mental Health Research at the Royal, Ottawa, Ontario
- CHEO Research Institute, Children's Hospital of Eastern Ontario, Ottawa, Ontario
- Mental Health Program, Children's Hospital of Eastern Ontario, Ottawa, Ontario
- Department of Psychiatry, University of Ottawa, Ottawa, Ontario
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7
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Abstract
The long-term impact of seasonal regulation of clocks (Daylight Saving Time) is analyzed showing that it helped to mitigate the advance of the phase of human activity during the twentieth century and the exposure to the hours of the dawn in winter. The increased risks induced by circadian misalignment around transition dates are balanced by a better alignment of social clocks to the natural day in summer and in winter.
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Affiliation(s)
- José María Martín-Olalla
- Facultad de Física, Departamento de Física de la Materia Condensada, Universidad de Sevilla, Sevilla, Spain
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8
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Abstract
The original rationale for the adoption of daylight saving time (DST) was to conserve energy; however, the effects of DST on energy consumption are questionable or negligible. Conversely, there is substantial evidence that DST transitions have the cumulative effect on sleep deprivation with its adverse health effects. In light of current evidence, the European Commission in 2018 decided that biannual clock change in Europe would be abolished. Current indirect evidence supports the adoption of perennial standard time, which aligns best with the human circadian system and has the potential to produce benefits for public health and safety.
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9
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Rishi MA, Ahmed O, Barrantes Perez JH, Berneking M, Dombrowsky J, Flynn-Evans EE, Santiago V, Sullivan SS, Upender R, Yuen K, Abbasi-Feinberg F, Aurora RN, Carden KA, Kirsch DB, Kristo DA, Malhotra RK, Martin JL, Olson EJ, Ramar K, Rosen CL, Rowley JA, Shelgikar AV, Gurubhagavatula I. Daylight saving time: an American Academy of Sleep Medicine position statement. J Clin Sleep Med 2021; 16:1781-1784. [PMID: 32844740 DOI: 10.5664/jcsm.8780] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
None The last several years have seen intense debate about the issue of transitioning between standard and daylight saving time. In the United States, the annual advance to daylight saving time in spring, and fall back to standard time in autumn, is required by law (although some exceptions are allowed under the statute). An abundance of accumulated evidence indicates that the acute transition from standard time to daylight saving time incurs significant public health and safety risks, including increased risk of adverse cardiovascular events, mood disorders, and motor vehicle crashes. Although chronic effects of remaining in daylight saving time year-round have not been well studied, daylight saving time is less aligned with human circadian biology-which, due to the impacts of the delayed natural light/dark cycle on human activity, could result in circadian misalignment, which has been associated in some studies with increased cardiovascular disease risk, metabolic syndrome and other health risks. It is, therefore, the position of the American Academy of Sleep Medicine that these seasonal time changes should be abolished in favor of a fixed, national, year-round standard time.
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Affiliation(s)
- Muhammad Adeel Rishi
- Department of Pulmonology, Critical Care and Sleep Medicine, Mayo Clinic, Eau Claire, Wisconsin
| | - Omer Ahmed
- Department of Medicine, Division of Pulmonary, Critical Care and Sleep Medicine, New York University School of Medicine, New York, New York
| | | | | | | | - Erin E Flynn-Evans
- Fatigue Countermeasures Laboratory, Human Systems Integration Division, NASA Ames Research Center, Moffett Field, California
| | - Vicente Santiago
- Sleep Medicine, The Permanente Medical Group, Manteca, California
| | - Shannon S Sullivan
- Department of Pediatrics, Division of Pulmonary, Asthma & Sleep Medicine, Stanford University School of Medicine, Palo Alto, California.,Eval Research Institute, Palo Alto, California
| | - Raghu Upender
- Department of Neurology, Division of Sleep Medicine, Vanderbilt Medical Center, Nashville, Tennessee
| | - Kin Yuen
- Sleep Disorders Center, UCSF Health, San Francisco, California
| | | | - R Nisha Aurora
- Department of Medicine, Rutgers Robert Wood Johnson Medical School, New Brunswick, New Jersey
| | - Kelly A Carden
- Saint Thomas Medical Partners - Sleep Specialists, Nashville, Tennessee
| | | | | | - Raman K Malhotra
- Sleep Medicine Center, Washington University School of Medicine, St. Louis, Missouri
| | - Jennifer L Martin
- Veteran Affairs Greater Los Angeles Healthcare System, North Hills, California.,David Geffen School of Medicine at the University of California, Los Angeles, California
| | - Eric J Olson
- Division of Pulmonary and Critical Care Medicine, Center for Sleep Medicine, Mayo Clinic, Rochester, Minnesota
| | - Kannan Ramar
- Division of Pulmonary and Critical Care Medicine, Center for Sleep Medicine, Mayo Clinic, Rochester, Minnesota
| | - Carol L Rosen
- Department of Pediatrics, Case Western Reserve University, Cleveland, Ohio
| | | | - Anita V Shelgikar
- University of Michigan Sleep Disorders Center, University of Michigan, Ann Arbor, Michigan
| | - Indira Gurubhagavatula
- Division of Sleep Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania.,Corporal Michael Crescenz VA Medical Center, Philadelphia, Pennsylvania
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10
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Daylight saving time and the incidence of thrombolysis to treat acute ischemic stroke. Rev Neurol (Paris) 2020; 176:361-365. [DOI: 10.1016/j.neurol.2019.08.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Revised: 06/25/2019] [Accepted: 08/27/2019] [Indexed: 11/18/2022]
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11
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The long term impact of Daylight Saving Time regulations in daily life at several circles of latitude. Sci Rep 2019; 9:18466. [PMID: 31804602 PMCID: PMC6895179 DOI: 10.1038/s41598-019-54990-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Accepted: 11/22/2019] [Indexed: 01/09/2023] Open
Abstract
We analyze large scale (N ~ 10000) time use surveys in United States, Spain, Italy, France and Great Britain to ascertain seasonal variations in the sleep/wake cycle and the labor cycle after daylight saving time regulations have stood up for at least forty years. That is, not the usual search for the impact of the biannual transitions, but a search for how industrialized societies have answered to DST regulations at different circles of latitude. Results show that the labor cycle is equally distributed through seasons if measured in local time. It is an everyday experience which is a major outcome of DST. The sleep/wake cycle displays disturbances punctuated by solar events: sunrise, sunset and noon. In week-ends, under free preferences, sleep onset delays in summer, opposing to the regulation and following the delay in sunset time, while sleep offset advances, despite clock time already advanced in the spring transition. This advance still follows the advance in sunrise times. The best explanation for these findings is that human cycles are not misaligned by the size and direction of DST regulations, which explains the success of that practice. The sleep/wake cycle in Great Britain and France exhibit fewer statistically significant excursions than the sleep/wake cycle in Spain, Italy and United States, despite light and dark seasonal deviations are larger. That could be indicating that the preference for a seasonal regulation of time decreases with increasing latitude above 47°. The preferences for a seasonal regulation of clocks and for the choice of permanent summer time or permanent winter time are sketched from a previous report on human activity.
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12
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Lindenberger LM, Ackermann H, Parzeller M. The controversial debate about daylight saving time (DST)—results of a retrospective forensic autopsy study in Frankfurt/Main (Germany) over 10 years (2006–2015). Int J Legal Med 2018; 133:1259-1265. [DOI: 10.1007/s00414-018-1960-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Accepted: 10/23/2018] [Indexed: 01/28/2023]
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Bauer M, Glenn T, Alda M, Aleksandrovich MA, Andreassen OA, Angelopoulos E, Ardau R, Ayhan Y, Baethge C, Bharathram SR, Bauer R, Baune BT, Becerra-Palars C, Bellivier F, Belmaker RH, Berk M, Bersudsky Y, Bicakci Ş, Birabwa-Oketcho H, Bjella TD, Bossini L, Cabrera J, Cheung EYW, Del Zompo M, Dodd S, Donix M, Etain B, Fagiolini A, Fountoulakis KN, Frye MA, Gonzalez-Pinto A, Gottlieb JF, Grof P, Harima H, Henry C, Isometsä ET, Janno S, Kapczinski F, Kardell M, Khaldi S, Kliwicki S, König B, Kot TL, Krogh R, Kunz M, Lafer B, Landén M, Larsen ER, Lewitzka U, Licht RW, Lopez-Jaramillo C, MacQueen G, Manchia M, Marsh W, Martinez-Cengotitabengoa M, Melle I, Meza-Urzúa F, Yee Ming M, Monteith S, Morken G, Mosca E, Munoz R, Mythri SV, Nacef F, Nadella RK, Nery FG, Nielsen RE, O'Donovan C, Omrani A, Osher Y, Østermark Sørensen H, Ouali U, Pica Ruiz Y, Pilhatsch M, Pinna M, da Ponte FDR, Quiroz D, Ramesar R, Rasgon N, Reddy MS, Reif A, Ritter P, Rybakowski JK, Sagduyu K, Scippa ÂM, Severus E, Simhandl C, Stein DJ, Strejilevich S, Subramaniam M, Sulaiman AH, Suominen K, Tagata H, Tatebayashi Y, Tondo L, Torrent C, Vaaler AE, Veeh J, Vieta E, Viswanath B, Yoldi-Negrete M, Zetin M, Zgueb Y, Whybrow PC. Solar insolation in springtime influences age of onset of bipolar I disorder. Acta Psychiatr Scand 2017; 136:571-582. [PMID: 28722128 DOI: 10.1111/acps.12772] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 06/16/2017] [Indexed: 01/19/2023]
Abstract
OBJECTIVE To confirm prior findings that the larger the maximum monthly increase in solar insolation in springtime, the younger the age of onset of bipolar disorder. METHOD Data were collected from 5536 patients at 50 sites in 32 countries on six continents. Onset occurred at 456 locations in 57 countries. Variables included solar insolation, birth-cohort, family history, polarity of first episode and country physician density. RESULTS There was a significant, inverse association between the maximum monthly increase in solar insolation at the onset location, and the age of onset. This effect was reduced in those without a family history of mood disorders and with a first episode of mania rather than depression. The maximum monthly increase occurred in springtime. The youngest birth-cohort had the youngest age of onset. All prior relationships were confirmed using both the entire sample, and only the youngest birth-cohort (all estimated coefficients P < 0.001). CONCLUSION A large increase in springtime solar insolation may impact the onset of bipolar disorder, especially with a family history of mood disorders. Recent societal changes that affect light exposure (LED lighting, mobile devices backlit with LEDs) may influence adaptability to a springtime circadian challenge.
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Affiliation(s)
- M Bauer
- Department of Psychiatry and Psychotherapy, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - T Glenn
- ChronoRecord Association, Fullerton, CA, USA
| | - M Alda
- Department of Psychiatry, Dalhousie University, Halifax, NS, Canada
| | | | - O A Andreassen
- NORMENT - K.G. Jebsen Centre for Psychosis Research, Division of Mental Health and Addiction, Oslo University Hospital & Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - E Angelopoulos
- Department of Psychiatry, Medical School, Eginition Hospital, National and Capodistrian University of Athens, Athens, Greece
| | - R Ardau
- Section of Neurosciences and Clinical Pharmacology, Department of Biomedical Sciences, University of Cagliari, Sardinia, Italy
| | - Y Ayhan
- Department of Psychiatry, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - C Baethge
- Department of Psychiatry and Psychotherapy, University of Cologne Medical School, Cologne, Germany
| | | | - R Bauer
- Department of Psychiatry and Psychotherapy, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - B T Baune
- Department of Psychiatry, School of Medicine, University of Adelaide, Adelaide, SA, Australia
| | - C Becerra-Palars
- National Institute of Psychiatry '"Ramón de la Fuente Muñiz", Mexico City, Mexico
| | - F Bellivier
- Psychiatry and Addiction Medicine, Assistance Publique - Hôpitaux de Paris, FondaMental Foundation, INSERM UMR-S1144, Denis Diderot University, René Descartes University, Paris, France
| | - R H Belmaker
- Department of Psychiatry, Faculty of Health Sciences, Beer Sheva Mental Health Center, Ben Gurion University of the Negev, Beer Sheva, Israel
| | - M Berk
- IMPACT Strategic Research Centre, School of Medicine, Barwon Health, Deakin University, Geelong, Vic., Australia.,Department of Psychiatry, Orygen, the National Centre for Excellence in Youth Mental Health, the Centre for Youth Mental Health and the Florey Institute for Neuroscience and Mental Health, University of Melbourne, Parkville, Vic., Australia
| | - Y Bersudsky
- Department of Psychiatry, Faculty of Health Sciences, Beer Sheva Mental Health Center, Ben Gurion University of the Negev, Beer Sheva, Israel
| | - Ş Bicakci
- Department of Psychiatry, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | | | - T D Bjella
- NORMENT - K.G. Jebsen Centre for Psychosis Research, Division of Mental Health and Addiction, Oslo University Hospital & Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - L Bossini
- Department of Molecular Medicine and Department of Mental Health (DAI), University of Siena and University of Siena Medical Center (AOUS), Siena, Italy
| | - J Cabrera
- Mood Disorders Clinic, Dr. Jose Horwitz Psychiatric Institute, Santiago de Chile, Chile
| | - E Y W Cheung
- Department of General Adult Psychiatry, Castle Peak Hospital, Tuen Mun, Hong Kong
| | - M Del Zompo
- Section of Neurosciences and Clinical Pharmacology, Department of Biomedical Sciences, University of Cagliari, Sardinia, Italy
| | - S Dodd
- IMPACT Strategic Research Centre, School of Medicine, Barwon Health, Deakin University, Geelong, Vic., Australia.,Department of Psychiatry, University of Melbourneo, Parkville, Vic, Australia
| | - M Donix
- Department of Psychiatry and Psychotherapy, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - B Etain
- Psychiatry and Addiction Medicine, Assistance Publique - Hôpitaux de Paris, FondaMental Foundation, INSERM UMR-S1144, Denis Diderot University, René Descartes University, Paris, France
| | - A Fagiolini
- Department of Molecular Medicine and Department of Mental Health (DAI), University of Siena and University of Siena Medical Center (AOUS), Siena, Italy
| | - K N Fountoulakis
- Division of Neurosciences, 3rd Department of Psychiatry, School of Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - M A Frye
- Department of Psychiatry & Psychology, Mayo Clinic Depression Center, Mayo Clinic, Rochester, MN, USA
| | - A Gonzalez-Pinto
- Department of Psychiatry, University Hospital of Alava, University of the Basque Country, CIBERSAM, Vitoria, Spain
| | - J F Gottlieb
- Department of Psychiatry, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - P Grof
- Mood Disorders Center of Ottawa, University of Toronto, Toronto, ON, Canada
| | - H Harima
- Department of Psychiatry, Tokyo Metropolitan Matsuzawa Hospital, Setagaya, Tokyo, Japan
| | - C Henry
- AP-HP, Hopitaux Universitaires Henri Mondor and INSERM U955 (IMRB) and Université Paris Est and Institut Pasteur, Unité Perception et Mémoire, Paris, France
| | - E T Isometsä
- Department of Psychiatry, University of Helsinki and Helsinki University Hospital, Helsinki, Finland.,National Institute for Health and Welfare, Helsinki, Finland
| | - S Janno
- Department of Psychiatry, University of Tartu, Tartu, Estonia
| | - F Kapczinski
- Department of Psychiatry, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - M Kardell
- Department of Psychiatry and Neurochemistry, Institute of Neuroscience and Physiology, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - S Khaldi
- Private practice, Tunis, Tunisia
| | - S Kliwicki
- Department of Adult Psychiatry, Poznan University of Medical Sciences, Poznan, Poland
| | - B König
- BIPOLAR Zentrum Wiener Neustadt, Wiener Neustadt, Austria
| | - T L Kot
- Khanty-Mansiysk Clinical Psychoneurological Hospital, Khanty-Mansiysk, Russia
| | - R Krogh
- Department of Affective Disorders, Q, Mood Disorders Research Unit, Aarhus University Hospital, Aarhus, Denmark
| | - M Kunz
- Department of Psychiatry, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - B Lafer
- Bipolar Disorder Research Program, Department of Psychiatry, University of São Paulo Medical School, São Paulo, Brazil
| | - M Landén
- Department of Psychiatry and Neurochemistry, Institute of Neuroscience and Physiology, the Sahlgrenska Academy, University of Gothenburg, Gothenburg and Mölndal, Sweden.,Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
| | - E R Larsen
- Department of Affective Disorders, Q, Mood Disorders Research Unit, Aarhus University Hospital, Aarhus, Denmark
| | - U Lewitzka
- Department of Psychiatry and Psychotherapy, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - R W Licht
- Unit for Psychiatric Research, Aalborg University Hospital, Psychiatry, Aalborg, Denmark.,Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
| | - C Lopez-Jaramillo
- Mood Disorders Program, Hospital Universitario San Vicente Fundación, Research Group in Psychiatry, Department of Psychiatry, Faculty of Medicine, Universidad de Antioquia, Medellín, Colombia
| | - G MacQueen
- Department of Psychiatry, Faculty of Medicine, University of Calgary, Calgary, AB, Canada
| | - M Manchia
- Section of Psychiatry, Department of Medical Science and Public Health, University of Cagliari, Cagliari, Italy
| | - W Marsh
- Department of Psychiatry, University of Massachusetts, Worcester, MA, USA
| | - M Martinez-Cengotitabengoa
- Department of Psychiatry, University Hospital of Alava, University of the Basque Country, CIBERSAM, Vitoria, Spain
| | - I Melle
- NORMENT - K.G. Jebsen Centre for Psychosis Research, Division of Mental Health and Addiction, Oslo University Hospital & Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - F Meza-Urzúa
- National Institute of Psychiatry '"Ramón de la Fuente Muñiz", Mexico City, Mexico
| | - M Yee Ming
- Department of General Psychiatry, Mood Disorders Unit, Institute of Mental Health, Singapore City, Singapore
| | - S Monteith
- Traverse City Campus, Michigan State University College of Human Medicine, Traverse City, MI, USA
| | - G Morken
- Department of Mental Health, Norwegian University of Science and Technology - NTNU, Trondheim, Norway.,Department of Psychiatry, St Olavs' University Hospital, Trondheim, Norway
| | - E Mosca
- Section of Neurosciences and Clinical Pharmacology, Department of Biomedical Sciences, University of Cagliari, Sardinia, Italy
| | - R Munoz
- Department of Psychiatry, University of California San Diego, San Diego, CA, USA
| | - S V Mythri
- Asha Bipolar Clinic, Asha Hospital, Hyderabad, Telangana, India
| | - F Nacef
- Razi Hospital, Faculty of Medicine, University of Tunis-El Manar, Tunis, Tunisia
| | - R K Nadella
- Department of Psychiatry, NIMHANS, Bangalore, India
| | - F G Nery
- Bipolar Disorder Research Program, Department of Psychiatry, University of São Paulo Medical School, São Paulo, Brazil
| | - R E Nielsen
- Unit for Psychiatric Research, Aalborg University Hospital, Psychiatry, Aalborg, Denmark.,Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
| | - C O'Donovan
- Department of Psychiatry, Dalhousie University, Halifax, NS, Canada
| | - A Omrani
- Tunisian Bipolar Forum, Érable Médical Cabinet 324, Tunis, Tunisia
| | - Y Osher
- Department of Psychiatry, Faculty of Health Sciences, Beer Sheva Mental Health Center, Ben Gurion University of the Negev, Beer Sheva, Israel
| | - H Østermark Sørensen
- Unit for Psychiatric Research, Aalborg University Hospital, Psychiatry, Aalborg, Denmark
| | - U Ouali
- Razi Hospital, Faculty of Medicine, University of Tunis-El Manar, Tunis, Tunisia
| | - Y Pica Ruiz
- Hospital "Ángeles del Pedregal", Mexico City, Mexico
| | - M Pilhatsch
- Department of Psychiatry and Psychotherapy, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - M Pinna
- Lucio Bini Mood Disorder Center, Cagliari, Italy
| | - F D R da Ponte
- Department of Psychiatry, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - D Quiroz
- Deparment of Psychiatry, Diego Portales University, Santiago de Chile, Chile
| | - R Ramesar
- UCT/MRC Human Genetics Research Unit, Division of Human Genetics, Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town, South Africa
| | - N Rasgon
- Department of Psychiatry and Behavioral Sciences, Stanford School of Medicine, Palo Alto, CA, USA
| | - M S Reddy
- Asha Bipolar Clinic, Asha Hospital, Hyderabad, Telangana, India
| | - A Reif
- Department of Psychiatry, Psychosomatic Medicine and Psychotherapy, University Hospital Frankfurt, Johann Wolfgang Goethe-Universität Frankfurt am Main, Frankfurt am Main, Germany
| | - P Ritter
- Department of Psychiatry and Psychotherapy, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - J K Rybakowski
- Department of Adult Psychiatry, Poznan University of Medical Sciences, Poznan, Poland
| | - K Sagduyu
- Department of Psychiatry, University of Missouri Kansas City School of Medicine, Kansas City, MO, USA
| | - Â M Scippa
- Department of Neuroscience and Mental Health, Federal University of Bahia, Salvador, Brazil
| | - E Severus
- Department of Psychiatry and Psychotherapy, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - C Simhandl
- BIPOLAR Zentrum Wiener Neustadt, Wiener Neustadt, Austria
| | - D J Stein
- Department of Psychiatry, MRC Unit on Risk & Resilience in Mental Disorders, University of Cape Town, Cape Town, South Africa
| | - S Strejilevich
- Bipolar Disorder Program, Neuroscience Institute, Favaloro University, Buenos Aires, Argentina
| | - M Subramaniam
- Research Division, Institute of Mental Health, Singapore City, Singapore
| | - A H Sulaiman
- Department of Psychological Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - K Suominen
- Department of Social Services and Health Care, Psychiatry, City of Helsinki, Helsinki, Finland
| | - H Tagata
- Department of Psychiatry, Tokyo Metropolitan Matsuzawa Hospital, Setagaya, Tokyo, Japan
| | - Y Tatebayashi
- Schizophrenia & Affective Disorders Research Project, Tokyo Metropolitan Institute of Medical Science, Seatagaya, Tokyo, Japan
| | - L Tondo
- McLean Hospital-Harvard Medical School, Boston, MA, USA.,Mood Disorder Lucio Bini Centers, Cagliari e Roma, Italy
| | - C Torrent
- Clinical Institute of Neuroscience, Hospital Clinic, University of Barcelona, IDIBAPS, CIBERSAM, Barcelona, Catalonia, Spain
| | - A E Vaaler
- Department of Mental Health, Norwegian University of Science and Technology - NTNU, Trondheim, Norway.,Department of Psychiatry, St Olavs' University Hospital, Trondheim, Norway
| | - J Veeh
- Department of Psychiatry, Psychosomatic Medicine and Psychotherapy, University Hospital Frankfurt, Johann Wolfgang Goethe-Universität Frankfurt am Main, Frankfurt am Main, Germany
| | - E Vieta
- Clinical Institute of Neuroscience, Hospital Clinic, University of Barcelona, IDIBAPS, CIBERSAM, Barcelona, Catalonia, Spain
| | - B Viswanath
- Department of Psychiatry, NIMHANS, Bangalore, India
| | - M Yoldi-Negrete
- Consejo Nacional de Ciencia y Tecnología - Instituto Nacional de Psiquiatría Ramón de la Fuente Muñiz, Ciudad de México, Mexico
| | - M Zetin
- Department of Psychology, Chapman University, Orange, CA, USA
| | - Y Zgueb
- Razi Hospital, Faculty of Medicine, University of Tunis-El Manar, Tunis, Tunisia
| | - P C Whybrow
- Department of Psychiatry and Biobehavioral Sciences, Semel Institute for Neuroscience and Human Behavior University of California Los Angeles (UCLA), Los Angeles, CA, USA
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14
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Jaramillo CL, Mejía AC, Velásquez AH, Restrepo Palacio TF, Zuluaga JO. Síndrome metabólico y trastorno afectivo bipolar: una revisión de la literatura. ACTA ACUST UNITED AC 2013; 42:283-91. [DOI: 10.1016/s0034-7450(13)70021-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2013] [Accepted: 05/21/2013] [Indexed: 01/21/2023]
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15
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Harrison Y. Individual response to the end of Daylight Saving Time is largely dependent on habitual sleep duration. BIOL RHYTHM RES 2013. [DOI: 10.1080/09291016.2012.692255] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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16
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The impact of daylight saving time on sleep and related behaviours. Sleep Med Rev 2013; 17:285-92. [PMID: 23477947 DOI: 10.1016/j.smrv.2012.10.001] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2012] [Revised: 10/04/2012] [Accepted: 10/04/2012] [Indexed: 11/20/2022]
Abstract
Daylight saving time is currently adopted in over 70 countries and imposes a twice yearly 1 h change in local clock time. Relative ease in adjustment of sleep patterns is assumed by the general population but this review suggests that the scientific data challenge a popular understanding of the clock change periods. The start of daylight saving time in the spring is thought to lead to the relatively inconsequential loss of 1 h of sleep on the night of the transition, but data suggests that increased sleep fragmentation and sleep latency present a cumulative effect of sleep loss, at least across the following week, perhaps longer. The autumn transition is often popularised as a gain of 1 h of sleep but there is little evidence of extra sleep on that night. The cumulative effect of five consecutive days of earlier rise times following the autumn change again suggests a net loss of sleep across the week. Indirect evidence of an increase in traffic accident rates, and change in health and regulatory behaviours which may be related to sleep disruption suggest that adjustment to daylight saving time is neither immediate nor without consequence.
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17
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Bauer M, Glenn T, Alda M, Andreassen OA, Ardau R, Bellivier F, Berk M, Bjella TD, Bossini L, Zompo MD, Dodd S, Fagiolini A, Frye MA, Gonzalez-Pinto A, Henry C, Kapczinski F, Kliwicki S, König B, Kunz M, Lafer B, Lopez-Jaramillo C, Manchia M, Marsh W, Martinez-Cengotitabengoa M, Melle I, Morken G, Munoz R, Nery FG, O’Donovan C, Pfennig A, Quiroz D, Rasgon N, Reif A, Rybakowski J, Sagduyu K, Simhandl C, Torrent C, Vieta E, Zetin M, Whybrow PC. Impact of sunlight on the age of onset of bipolar disorder. Bipolar Disord 2012; 14:654-63. [PMID: 22612720 PMCID: PMC3525652 DOI: 10.1111/j.1399-5618.2012.01025.x] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
OBJECTIVE Although bipolar disorder has high heritability, the onset occurs during several decades of life, suggesting that social and environmental factors may have considerable influence on disease onset. This study examined the association between the age of onset and sunlight at the location of onset. METHOD Data were obtained from 2414 patients with a diagnosis of bipolar I disorder, according to DSM-IV criteria. Data were collected at 24 sites in 13 countries spanning latitudes 6.3 to 63.4 degrees from the equator, including data from both hemispheres. The age of onset and location of onset were obtained retrospectively, from patient records and/or direct interviews. Solar insolation data, or the amount of electromagnetic energy striking the surface of the earth, were obtained from the NASA Surface Meteorology and Solar Energy (SSE) database for each location of onset. RESULTS The larger the maximum monthly increase in solar insolation at the location of onset, the younger the age of onset (coefficient= -4.724, 95% CI: -8.124 to -1.323, p=0.006), controlling for each country's median age. The maximum monthly increase in solar insolation occurred in springtime. No relationships were found between the age of onset and latitude, yearly total solar insolation, and the maximum monthly decrease in solar insolation. The largest maximum monthly increases in solar insolation occurred in diverse environments, including Norway, arid areas in California, and Chile. CONCLUSION The large maximum monthly increase in sunlight in springtime may have an important influence on the onset of bipolar disorder.
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Affiliation(s)
- Michael Bauer
- Department of Psychiatry and Psychotherapy, University Hospital Carl Gustav Carus, Technische Universität Dresden, Germany.
| | - Tasha Glenn
- ChronoRecord Association, Fullerton, CA, USA
| | - Martin Alda
- Department of Psychiatry, Dalhousie University, Halifax, NS Canada
| | - Ole A Andreassen
- Division of Mental Health and Addiction, Oslo University Hospital & Institute of Clinical Medicine, Oslo, Norway
| | - Raffaella Ardau
- Unit of Clinical Pharmacology, University-Hospital of Cagliari, Italy
| | - Frank Bellivier
- Pôle de Psychiatrie, Hôpital H. Mondor, APHP, INSERM U955, Faculté de Médecine and FondaMental Fondation, Créteil, France
| | | | - Thomas D Bjella
- Division of Mental Health and Addiction, Oslo University Hospital & Institute of Clinical Medicine, Oslo, Norway
| | - Letizia Bossini
- Department of Neuroscience and Mental Health, University of Siena School of Medicine, Siena, Italy
| | - Maria Del Zompo
- Department of Neurosciences ‘B.B. Brodie’, University of Cagliari, Sardinia, Italy
| | | | - Andrea Fagiolini
- Department of Neuroscience and Mental Health, University of Siena School of Medicine, Siena, Italy
| | - Mark A Frye
- Department of Psychiatry, & Psychology, Integrated Mood Group, Mayo Clinic, Rochester, MN, USA
| | - Ana Gonzalez-Pinto
- Department of Psychiatry, Santiago Apóstol Hospital, University of the Basque Country. CIBERSAM, Vitoria, Spain
| | - Chantal Henry
- Université Paris-Est, Faculté de Médecine, UMR-S 955, Créteil, F-94010, France
| | - Flávio Kapczinski
- Laboratory of Molecular Psychiatry, Hospital de Clínicas de Porto Alegre, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Sebastian Kliwicki
- Department of Psychiatry, Poznan University of Medical Science, Poznan, Poland
| | - Barbara König
- BIPOLAR Zentrum Wiener Neustadt, Wiener Neustadt, Austria
| | - Mauricio Kunz
- Laboratory of Molecular Psychiatry, Hospital de Clínicas de Porto Alegre, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Beny Lafer
- Bipolar Disorder Research Program, Department of Psychiatry, University of São Paulo Medical School, São Paulo, Brazil
| | - Carlos Lopez-Jaramillo
- Mood Disorders Program, Fundacion San Vicente de Paul, Department of Psychiatry, Universidad de Antioquia, Medellín, Colombia
| | - Mirko Manchia
- Department of Psychiatry, Dalhousie University, Halifax, NS Canada
| | - Wendy Marsh
- Department of Psychiatry, University of Massachusetts, Worcester, MA, USA
| | | | - Ingrid Melle
- Division of Mental Health and Addiction, Oslo University Hospital & Institute of Clinical Medicine, Oslo, Norway
| | - Gunnar Morken
- Department of Neuroscience, NTNU, and St Olavs’ University Hospital, Trondheim, Norway
| | - Rodrigo Munoz
- Department of Psychiatry, University of California San Diego, San Diego, CA, USA
| | - Fabiano G Nery
- Bipolar Disorder Research Program, Department of Psychiatry, University of São Paulo Medical School, São Paulo, Brazil
| | - Claire O’Donovan
- Department of Psychiatry, Dalhousie University, Halifax, NS Canada
| | - Andrea Pfennig
- Department of Psychiatry and Psychotherapy, University Hospital Carl Gustav Carus, Technische Universität Dresden, Germany
| | | | - Natalie Rasgon
- Department of Psychiatry and Behavioral Sciences, Stanford School of Medicine, Palo Alto, CA, USA
| | - Andreas Reif
- Department of Psychiatry, Psychosomatics and Psychotherapy, University of Würzburg, Würzburg, Germany
| | - Janusz Rybakowski
- Department of Psychiatry, Poznan University of Medical Science, Poznan, Poland
| | - Kemal Sagduyu
- Department of Psychiatry, University of Missouri Kansas City School of Medicine, Kansas City, MO, USA
| | | | - Carla Torrent
- Clinical Institute of Neuroscience, Hospital Clinic, University of Barcelona, IDIBAPS, CIBERSAM, Barcelona, Catalonia, Spain
| | - Eduard Vieta
- Clinical Institute of Neuroscience, Hospital Clinic, University of Barcelona, IDIBAPS, CIBERSAM, Barcelona, Catalonia, Spain
| | - Mark Zetin
- Department of Psychology, Chapman University, Orange, CA, USA
| | - Peter C Whybrow
- Department of Psychiatry and Biobehavioral Sciences, Semel Institute for Neuroscience and Human Behavior, University of California Los Angeles (UCLA), Los Angeles, CA, USA
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18
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Schneider AM, Randler C. Daytime sleepiness during transition into daylight saving time in adolescents: Are owls higher at risk? Sleep Med 2009; 10:1047-50. [PMID: 19346161 DOI: 10.1016/j.sleep.2008.08.009] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/01/2008] [Revised: 08/03/2008] [Accepted: 08/07/2008] [Indexed: 11/30/2022]
Abstract
BACKGROUND Individuals differ in their biological rhythms and preferences for time of day. Here, we looked at the transition into daylight saving time (DST) in adolescents. As adolescents tend to be evening types, one may expect that they suffer from a transition into DST. METHODS To assess these changes, we measured daytime sleepiness and morningness-eveningness preference (CSM score) in adolescents. RESULTS Daytime sleepiness correlated with age and CSM score. Older pupils and evening types showed a higher sleepiness. Daytime sleepiness was higher after the transition until the third week after. Older pupils and pupils scoring higher on eveningness reported higher daytime sleepiness after the transition, suggesting that these pupils suffer most from the change. Using cut-off scores for larks and owls, we found that owls showed higher sleepiness than larks. CONCLUSION As one consequence, class and school performance tests should not take place in the first week(s) after the transition into DST.
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