Evaluation of Concomitant Use of Anticancer Drugs and Herbal Products: From Interactions to Synergic Activity

CAM is used by about 40% of cancer patients in Western Countries, with peaks of 80% for breast cancer patients. Cancer patients use CAM to boost immune function, to control cancer symptoms and treatment-related side effects, and to improve health-related quality of life (HR-QoL) and survival. Unfortunately, self-prescription of natural remedies in cancer patients can lead to unexpected toxicities and can reduce the effectiveness of cancer therapy. Although CAM usually refers to all the "natural or organic" products/methods that are generally considered less toxic, there are concerns about drug interactions, especially in patients participating in clinical trials with experimental agents. Despite the claims of the promising and potential benefits made by prescribers, many CAMs lack clear scientific evidence of their safety and efficacy. Given the widespread use of CAM-both clearly declared and overt-in this review, we focused on the most important known data on the risk of interactions between biologics and oncology drugs with the goal of opening up CAM in accordance with the meaning of integrative medicine.

The Online Cancer Nutrition Misinformation: A framework of behavior change based on exposure to cancer nutrition misinformation

BACKGROUND

Patients with cancer and caregivers increasingly use the internet to find health and lifestyle information, yet online recipes, diet, and nutrition content are unregulated and may be confusing or even misleading. We describe cancer-related nutrition and meal planning information from Pinterest.

METHODS

In June 2020, we searched Pinterest using "cancer recipe" and "recipe for cancer" at 3 times daily for 2 weeks. Duplicates were removed for a final sample of n = 103 pins. Each pin was coded for 58 variables including descriptives, cancer claims (eg, treatment, prevention, and cure), and nutrition claims (eg, "turmeric cures cancer"). We summarized each variable to describe the content of cancer nutrition claims on Pinterest and examined associations between claim types and contextual factors, including the use of academic citations, disclaimers, and personal anecdotes.

RESULTS

Pinners had on average 116,767 followers (range, 0-1.5 million). Almost half of content sites were for profit (48.5%) and 34% were selling a product. Health claims were common, with content that purported to prevent (41.8%), treat (27.2%), or cure (10.7%) cancer. Vague phrases such as "anti-cancer," "cancer-fighting," or "cancer-busting" were also used. The inclusion of validity indicators including academic citations, disclaimers, and personal anecdotes varied significantly by the types of claims made. Together, these analyses informed the development of a conceptual framework of cancer-related nutrition misinformation.

CONCLUSIONS

There are clear financial incentives for the promotion of cancer nutrition information online. More research is needed to understand how exposure to nutrition information can influence patient/caregiver behavior and downstream clinical and psychosocial outcomes.

Complementary and Alternative Medicine Use in Hospitalized Cancer Patients—Study from Silesia, Poland

Background: The use of complementary and alternative medicine (CAM) is common amongst cancer patients. The aim of the study was to investigate the use of CAM, beliefs about CAM and the purpose of using it amongst Polish cancer patients. Methods: The study included 864 cancer patients (median 63 years old), who were individually interviewed. The questionnaire was designed specifically for this study. Results: Amongst 732 patients who declared that they heard about CAM, 342 patients (46.7%) had used CAM; 91% of these patients had used it as a complementary therapy and 9% had used it as an alternative therapy. Patients younger in age, highly educated, professionally active, with longer medical history, and at more advanced cancer stages have, statistically, used CAM more often; 66% of participants could not state what the health effect of CAM is. Patients received information about CAM from the internet, friends, family and other patients. Only 18% of patients discussed using CAM with a doctor. Conclusions: CAM was popular amongst Polish cancer patients, especially in younger, educated and professionally active patients with longer cancer history at advanced stage. Patients used CAM as a complementary therapy for strengthening immune system, improving morphological and biochemical test parameters, reducing the side effects of conventional therapy and improving their well-being.

Clinical outcomes of head and neck cancer patients who refuse curative therapy in pursuit of alternative medicine

BACKGROUND

We investigated the alarming trend of curable head and neck cancer (HNC) patients forgoing conventional treatment to pursue alternative medicine (AM).

METHODS

A prospectively maintained database identified HNC patients with ≥12 weeks from diagnosis to treatment initiation between 2012 and 2017. Reasons for delay were categorized and clinical stages and outcomes of AM patients were assessed through chart review by December 2019.

RESULTS

Among 1462 patients with primary HNC, 68 patients (4.7%) were confirmed to delay initiation of potentially curative treatment, and 19 of these patients (28%) delayed treatment to pursue AM. Eleven of 19 AM patients transitioned from curative intent to palliation while exploring AM. Continued treatment rejection was common and outcomes corresponded to patients' degree of treatment adherence.

CONCLUSIONS

AM caused treatment delay and poor outcomes in potentially curable HNC. Improved knowledge among physicians regarding AM and complementary approaches is urgently needed to improve patient counseling.

LEVEL OF EVIDENCE

Level 2c outcomes research.

Targeting Drug Chemo-Resistance in Cancer Using Natural Products

Cancer is one of the leading causes of death globally. The development of drug resistance is the main contributor to cancer-related mortality. Cancer cells exploit multiple mechanisms to reduce the therapeutic effects of anticancer drugs, thereby causing chemotherapy failure. Natural products are accessible, inexpensive, and less toxic sources of chemotherapeutic agents. Additionally, they have multiple mechanisms of action to inhibit various targets involved in the development of drug resistance. In this review, we have summarized the basic research and clinical applications of natural products as possible inhibitors for drug resistance in cancer. The molecular targets and the mechanisms of action of each natural product are also explained. Diverse drug resistance biomarkers were sensitive to natural products. P-glycoprotein and breast cancer resistance protein can be targeted by a large number of natural products. On the other hand, protein kinase C and topoisomerases were less sensitive to most of the studied natural products. The studies discussed in this review will provide a solid ground for scientists to explore the possible use of natural products in combination anticancer therapies to overcome drug resistance by targeting multiple drug resistance mechanisms.

The role of scientific reasoning and religious beliefs in use of complementary and alternative medicine

BACKGROUND

While previous research has shown that trust in complementary and alternative medicine (CAM) is linked with other unfounded beliefs (e.g. paranormal phenomena or pharmaceutical conspiracies) and that analytic thinking can help alter these beliefs, the role of the ability to evaluate evidence as a protective factor has not been established yet.

METHODS

A cross-sectional design with a hundred participants was used with self-report data from questionnaires and performance test. The dependent variables were the belief in CAM and use of CAM. Predictor variables were scientific reasoning (measured by Scientific Reasoning Scale), critical thinking dispositions (measured by Critical Thinking Disposition Instrument; UF-EMI), religious beliefs (measured by Santa Clara Strength of Religious Faith Questionnaire), gender and age.

RESULTS

Scientific reasoning and religious faith independently predicted belief in alternative medicine, while the role of scientific reasoning in actual reported use of CAM diminished after religious faith, gender and age were introduced to the model.

CONCLUSION

The results highlight the fact that it is not enough to appeal to the general critical thinking of people, but we need to teach them some practical skills that would help them to evaluate evidence in other, health-unrelated, contexts as well.

Open dialogue about complementary and alternative medicine (CAM) integrated in conventional oncology care, characteristics and impact. A systematic review

OBJECTIVE

To systematically review evidence on the characteristics, experiences and impact of an open dialogue about complementary and alternative medicine (CAM) integrated in oncology care.

METHODS

We searched MEDLINE, EMBASE, AMED, Scopus, ProQuest Dissertations and Thesis, Cochrane Central Register, clinicaltrials.gov, forskningsdatabase.dk and PROSPERO. Two reviewers screened title, abstract and full-text articles. Each study was appraised using the Critical Appraisal Skills Programme (CASP) and synthesized narratively. PROSPERO registration CRD42019112242.

RESULTS

We retrieved 4736 articles and included 5; 3 received 9 ½, 1 received 9, and 1 received 5 points on the CASP score. Predominately, the open dialogue was one or two individual, patient-centered, face-to-face consultations led by oncology physicians. In one study, it was a tele-phone consultation and in another it was structured counseling led by pharmacists. Integrated information and recommendations about CAM contributed to high level of satisfaction and improvement in concerns, quality of life and well-being.

CONCLUSION

Integration of open dialogue about CAM in oncology care including acknowledging patients' preferences, values, wishes and knowledge, and providing information about CAM expands the opportunities for improving patients' health, quality of life and well-being.

PRACTICE IMPLICATIONS

Open dialogue about CAM has potentials, but research on how it specifically helps patients, is needed.

Barriers to Timely Diagnosis and Management of Breast Cancer: Observations from a Tertiary Referral Center in Resource Poor Setting

Breast cancer (BC) is the most common cancer among females worldwide, with over 2 million cases diagnosed every year. In India, it is the most common malignancy overall (15.4%) and accounts for about 27% female cancers. Morbidity and mortality remain high despite improvements in BC therapeutics. Conventionally, a gap of more than 3 months between noticing symptoms and commencing treatment is considered delay in BC management. Delays make BC an important public health problem and lead to poor outcomes. This study aims to identify patient perceived barriers to BC management. A self-designed structured questionnaire consisting of questions pertaining to multiple aspects of BC presentation and management was prepared. The study was conducted from October 2017 to September 2018 and results were analyzed. A delay of 3 months or more was seen in 284 of the 435 patients (65.3%), among which 179 was patient delay, 69 due to provider delay, and 36 due to a combined contribution of both factors. Provider factors were associated with prolonged delay. Misdiagnosis at first consult was the most common factor perceived by patients as a barrier, followed by delay in referral, distance from hospitals, lack of information, financial constraints, and logistic issues. A significant patient and provider delay exists in BC management which prevents effective early therapy. Effective tackling of these barriers may result in the betterment of BC management outcomes. Robust screening, education of patients and providers, and awareness promotion and infrastructure development will be useful in this regard.

"Then I went to a hospital abroad": acknowledging implications of stakeholders' differing risk understandings related to use of complementary and alternative medicine in European health care contexts

Background

Complementary and alternative medicine (CAM) is a rather novel issue within public healthcare and health policy-making. CAM use in Europe is widespread, patient-initiated, and patient-evaluated, and the regulation across countries has been evaluated as disharmonized. CAM users are left in an uncertain position, and patient safety may be threatened. How “risk” is understood by individuals in health policy-making and clinical encounters involving the use of CAM has not yet been much debated. The aim of this article is to explore and discuss the existence and possible consequences of differing risk understandings among stakeholders maneuvering in the complex landscape of CAM practice and CAM regulation contextualized by European public healthcare systems.

Methods

Qualitative data were derived from two studies on CAM in European healthcare contexts. Findings from the EU project CAMbrella on legislation and regulation of CAM were mixed with data from an interview study exploring risk understandings, communication, and decision-making among Scandinavian CAM users and their doctors. In a secondary content analysis, we constructed the case Sara as a typology to demonstrate important findings with regard to risk understandings and patient safety involving European citizens’ use of CAM in differing contexts.

Results

By combining and comparing individual and structural perspectives on risk and CAM use, we revealed underexplored gaps in risk understandings among individuals involved in European CAM regulation and legislation, and between CAM users and their medical doctors. This may cause health risks and uncertainties associated with CAM use and regulation. It may also negatively influence doctor-CAM user communication and CAM users’ trust in and use of public healthcare.

Conclusion

Acknowledging implications of stakeholders’ differing risk understandings related to CAM use and regulation may positively influence patient safety in European healthcare. Definitions of the concept of risk should include the factors uncertainty and subjectivity to grasp the full picture of possible risks associated with the use of CAM. To transform the findings of this study into practical settings, we introduce sets of questions relevant to operationalize the important question “What is risk?” in health policy-making, clinical encounters and risk research involving European patients’ use of CAM.

Survival Outcome of Alternative Medicine Treatment for Newly Diagnosed Acute Leukemia in Children

BACKGROUND

There is scarce information on the efficacy of alternative medicine (AM) alone as a treatment for newly diagnosed acute leukemia in children. We aimed to compare overall survival (OS) between children with newly diagnosed acute leukemia who received AM alone as the first-line treatment and those treated with conventional chemotherapy (CCT).

METHODS

Two-to-one nearest-neighbor propensity score-matching using sex, initial white blood cell count, phenotype of leukemia, and period of diagnosis was performed on 184 patients who received CCT and 92 who received AM alone after being diagnosed with leukemia. A multivariable Cox proportional-hazards regression model was then applied to assess the effect of treatment on OS after adjusting for potential confounders. Hazard ratios (HR) and 95% confidence intervals (CI) are provided.

RESULTS

After adjusting for initial white cell count and subtype of leukemia, children treated with AM alone had worse OS (HR 5.14, 95% CI 3.75-7.04) than those given CCT. The 5-year OS rate for newly diagnosed acute leukemia treated with AM medicine alone was 0%.

CONCLUSION

AM without CCT is associated with poorer survival when compared with CCT.

Complementary and Integrative Medicine to Reduce Adverse Effects of Anticancer Therapy

BACKGROUND

To address the side effects of anticancer treatments, the Clinic for Complementary Medicine and Diet in Oncology was opened, in collaboration with the oncology department, at the Hospital of Lucca (Italy) in 2013.

AIM

To present the results of complementary medicine treatment targeted toward reducing the adverse effects of anticancer therapy and cancer symptoms, and improving patient quality of life. Dietary advice was aimed at the reduction of foods that promote inflammation in favor of those with antioxidant and anti-inflammatory properties.

METHODS

This is a retrospective observational study on 357 patients consecutively visited from September 2013 to December 2017. The intensity of symptoms was evaluated according to a grading system from G0 (absent) to G1 (slight), G2 (moderate), and G3 (strong). The severity of radiodermatitis was evaluated with the Radiation Therapy Oncology Group (RTOG) scale. Almost all the patients (91.6%) were receiving or had just finished some form of conventional anticancer therapy.

RESULTS

The main types of cancer were breast (57.1%), colon (7.3%), lung (5.0%), ovary (3.9%), stomach (2.5%), prostate (2.2%), and uterus (2.5%). Comparison of clinical conditions before and after treatment showed a significant amelioration of nausea, insomnia, depression, anxiety, fatigue, mucositis, hot flashes, joint pain, dysgeusia, neuropathy, and all symptoms. Moreover, in a subgroup of 17 patients in radiotherapy undergoing integrative treatment, the level of toxicities and the severity of radiodermatitis were much lower than in the 13 patients without integrative treatment. Twenty-one cancer patients (6.2%) either refused (18) or discontinued (3) conventional anticancer treatment against the recommendation of their oncologist; after the integrative oncology (IO) visit, 7 (41.2%) out of 17 patients with follow-up decided to accept standard oncologic treatments.

CONCLUSIONS

An IO clinic may contribute to reducing the adverse effects of anticancer therapy and improving the quality of life of cancer patients.

Use of Alternative Medicine Is Delaying Health-Seeking Behavior by Bangladeshi Breast Cancer Patients

Objective

Various treatment options including alternative medicine is available in underdeveloped countries which attracts easily the community with low profile. This study aimed to find perception of the use and mode use of alternative medicine (AM) by Bangladeshi Breast cancer patients which may influence timely treatment seeking.

Materials and Methods

A cross sectional study was performed to determine the spectrum in use of alternative medicine and compare the use of alternative medicine with their delay in presentation. Patients were selected randomly from July 2015-June 2016 in a specialized public cancer hospital of Dhaka city. Face to face interview was taken from diagnosed breast cancer patients, collected in pre-structured data sheet, SPSS was used for statical tests.

Results

Out of 200 respondents, about half of the respondents 46.5% (93) first sought help to alternative medicine. Most of them 86.02 %(80) preferred to use homeopathy. The mean duration of use alternative medicine was 2.9±4.7 months, mean patient delay was 4 months. Use of alternative medicine was found significantly (p<0.05) associated with patient delay (p=0.019), provider delay (p<0.0001), total delay (p<0.0001), use of homeopathy (p<0.0001) and residence (p=0.014). Logistic regression analysis showed that alternative medicine was 4 times more likely to cause delay help seeking (OR=4.353; 95% CI 2.2.7-8.587) p<0.0001. The co-efficient r was 0.488, p<0.0001 and there was a positive correlation among delay and duration of use of alternative medicine.

Conclusion

Seeking medical help other than orthodox available treatment leads to delayed presentation by the breast cancer patients.

Toxicity of plant extracts containing pyrrolizidine alkaloids using alternative invertebrate models

Pyrrolizidine alkaloids (PAs) are a widespread class of hepatotoxic heterocyclic organic compounds found in approximately 3% of world flora. Some PAs have been shown to have genotoxic and carcinogenic effects. The present study focuses on the toxicity effects of four dry extracts obtained from medicinal plants (Senecio vernalis, Symphytum officinale, Petasites hybridus and Tussilago farfara), on two aquatic organisms, Artemia salina and Daphnia magna, and the correlation with their PAs content. A new GC‑MS method, using a retention time (TR)‑5MS type capillary column was developed. PAs Kovats retention indices, for this type of column were computed for the first time. The lethal dose 50% (LC50) values for the two invertebrate models were correlated (Pearson 's coefficient, >0.9) and the toxicity was PA concentration-dependent, for three of the four extracts. All tested extracts were found to be toxic in both aquatic organism models. The results can be used to develop a GC‑MS validated method for the assay of PAs in medicinal plants with a further potential application in the risk assessment study of PAs toxicity in humans.

Cancer Mortality, Early Detection and Treatment among Adult New Zealanders: Changes in Perceptions between 2001 and 2014/5

Background:

Beliefs about cancer risk and experience of early detection and treatment can impact on willingness to engage with these initiatives. This study describes changes in perceptions of cancer mortality, early detection and treatment among adult New Zealanders (NZ) between two cross-sectional studies conducted in 2001 and 2014/5.

Methods:

Data was collected via telephone interviews conducted by trained interviewers in 2001 (231 females and 207 males, 64% response rate) and 2014/5 (588 females and 476 males, 64% response rate). Participants were asked to identify the most common three causes of cancer mortality among women and then men. They were also asked to note their agreement or otherwise with statements about early detection and treatment of cancer.

Results:

There was an increase in proportions of men who correctly identified prostate cancer as one of the top three causes of cancer mortality among men, and also an increase among women who correctly identified bowel cancer as one of the top three. Most participants agreed that there were benefits from early detection for cancer outcomes. Over time, there was a significant decline in proportions which felt that most cancer treatment is “so terrible it is worse than death” and that alternative therapy has an “equal or better chance of curing cancer.”

Conclusion:

Internationally, there is little information available about changes in cancer perceptions over time, these findings suggest some changes in perceptions of treatment and awareness of types of cancer with the highest mortality in NZ, which should support timely engagement with early detection and treatment services.

Use of complementary and alternative medicine and breast cancer survival in the Health, Eating, Activity, and Lifestyle Study

PURPOSE

Use of complementary and alternative medicine (CAM) is common among breast cancer patients, but less is known about whether CAM influences breast cancer survival.

METHODS

Health Eating, Activity, and Lifestyle (HEAL) Study participants (n = 707) were diagnosed with stage I-IIIA breast cancer. Participants completed a 30-month post-diagnosis interview including questions on CAM use (natural products such as dietary and botanical supplements, alternative health practices, and alternative medical systems), weight, physical activity, and comorbidities. Outcomes were breast cancer-specific and total mortality, which were ascertained from the Surveillance Epidemiology and End Results registries in Western Washington, Los Angeles County, and New Mexico. Cox proportional hazards regression models were fit to data to estimate hazard ratios (HR) and 95 % confidence intervals (CI) for mortality. Models were adjusted for potential confounding by sociodemographic, health, and cancer-related factors.

RESULTS

Among 707 participants, 70 breast cancer-specific deaths and 149 total deaths were reported. 60.2 % of participants reported CAM use post-diagnosis. The most common CAM were natural products (51 %) including plant-based estrogenic supplements (42 %). Manipulative and body-based practices and alternative medical systems were used by 27 and 13 % of participants, respectively. No associations were observed between CAM use and breast cancer-specific (HR 1.04, 95 % CI 0.61-1.76) or total mortality (HR 0.91, 95 % CI 0.63-1.29).

CONCLUSION

Complementary and alternative medicine use was not associated with breast cancer-specific mortality or total mortality. Randomized controlled trials may be needed to definitively test whether there is harm or benefit from the types of CAM assessed in HEAL in relation to mortality outcomes in breast cancer survivors.

A Review of Integrative Medicine in Gynaecological Oncology

In recent years complementary and alternative medicine (CAM) has increasingly been the focus of international research. Numerous subsidised trials (7903) and systematic reviews (651) have been published, and the evidence is starting to be integrated into treatment guidelines. However, due to insufficient evidence and/or insufficient good quality evidence, this has mostly not translated to practice recommendations in reviews by the Cochrane collaboration gynaecology group. There is nevertheless a not insignificant number of CAM providers and users. The percentage of oncology patients who use CAM varies between 5 and 90 %. Doctors have been identified as the main providers of CAM. Half of gynaecologists offer CAM because of personal conviction or on suggestion from colleagues. This must be viewed in a critical light, since CAM is mostly practiced without appropriate training, often without sufficient evidence for a given method - and where evidence exists, practice guidelines are lacking - and lack of safety or efficacy testing. The combination of patient demand and lucrativeness for doctors/alternative medicine practitioners, both based on supposed effectiveness CAM, often leads to its indiscriminate use with uncertain outcomes and significant cost for patients. On the other hand there is published, positive level I evidence for a number of CAM treatment forms. The aim of this article is therefore to review the available evidence for CAM in gynaecological oncology practice. The continued need for research is highlighted, as is the need to integrate practices supported by good evidence into conventional gynaecological oncology.

Mapping the risk perception and communication gap between different professions of healthcare providers in cancer care: a cross-sectional protocol

INTRODUCTION

Studies show that patients with cancer who use complementary and alternative medicine (CAM) have a poorer survival prognosis than those who do not. It remains unclear whether this is due to a priori poorer prognosis that makes patients turn to CAM, or whether there is a factor associated with CAM use itself that influences the prognosis negatively. Healthcare providers should assist patients in safeguarding their treatment decision. However, the current non-communication between CAM and conventional providers leaves it up to the patients themselves to choose how to best integrate the two worlds of therapy. In this study, an interactive shared decision-making (SDM) tool will be developed to enable patients and health professionals to make safe health choices.

METHODS AND ANALYSIS

We will delineate, compare and evaluate perception and clinical experience of communication of risk situations among oncology experts, general practitioners and CAM practitioners. To accomplish this, we will develop a pilot and implement a large-scale survey among the aforementioned health professionals in Norway. Guided by the survey results, we will develop a β-version of a shared decision-making tool for healthcare providers to use in guiding patients to make safe CAM decisions.

ETHICS AND DISSEMINATION

Participants must give their informed and written consent before inclusion. They will be informed about the opportunity to drop out from the study followed by deletion of all data registered. The study needs no approval from The Regional Committee for Medical and Health Research Ethics because all participants are healthcare professionals. Results from this study will be disseminated in peer-reviewed medical journals.

Use of complementary and alternative medicine (CAM) and changes in depressive symptoms from 3 to 15 months after surgery for primary breast cancer: results from a nationwide cohort study

Background This large population-based prospective study explored the associations between use of complementary and alternative medicine (CAM) and prevalence and changes in depressive symptoms from 3 to 15 months after surgery for primary breast cancer. Methods In an ongoing nationwide cohort study, depressive symptoms and the use of ten different types of CAM since time of diagnosis were assessed by questionnaire at 3 (N = 3233) and 15 months post-surgery (N = 2833). Clinical and socio-demopraphic variables were obtained from the Danish Breast Cancer Cooperative Group (DBCG) and national longitudinal registries. Results At 3 months post-surgery, 40.2 % reported having used CAM since the diagnosis, and in the time from 3 to 15 months after surgery, 49.9 % had used CAM. Compared with non-users, CAM users experienced more depressive symptoms at both 3 and 15 months follow-up when adjusting for several possible confounders. In a fully adjusted model, including all CAM variables and adjusting for depressive symptoms at 3 months, use of dietary/vitamin supplements was the only independent, statistically significant risk factor for experiencing more depressive symptoms at 15 months (RM = 1.10; 95 % CI 1.02-1.19, P = 0.014). Conclusion Cross-sectionally, CAM use was associated with higher levels of depressive symptoms at both time-points. Prospectively, users of dietary or vitamin supplements at 3 months after surgery reported higher levels of depressive symptoms than non-users 1 year later. Possible explanations could be an increased vulnerability for depressive symptoms among women using CAM or adverse effects of dietary or vitamin supplements.

Why do some cancer patients receiving chemotherapy choose to take complementary and alternative medicines and what are the risks?

Complementary and alternative medicine (CAM) cover a broad and diverse group of treatments and products that do not tend to be widely used by conventional healthcare professions. CAM that is systemically absorbed is the most likely to interfere with concurrent chemotherapy and potentially cause harm to cancer patients. Patients receiving chemotherapy may be consuming CAM to treat cancer, to lessen chemotherapy side effects, for symptom management, or to treat conditions unrelated to their cancer. A small proportion of cancer patients decide to use CAM alone to treat cancer and delay conventional treatment. Cancer patients may be influenced in their CAM decision-making by others: practitioners, family, friends, spouse and even casual acquaintances met in waiting rooms and support groups. This influence may range from encouraging and supporting the patient's decision through to making the decisions for the patient. When tested in rigorous clinical trials, no CAM cancer treatments alone have shown benefit beyond placebo. With the exception of ginger to treat chemotherapy-induced nausea, there is no compelling evidence overriding risk to take complementary medicines for supportive care during chemotherapy treatment. There is, however, established evidence to use mind-body complementary therapies for supportive care during chemotherapy treatment.

Effect of complementary and alternative medicine on the survival and health-related quality of life among terminally ill cancer patients: a prospective cohort study

BACKGROUND

We evaluated whether complementary and alternative medicine (CAM) use influenced outcomes [survival and health-related quality of life (HRQOL)] of cancer patients whose condition had just been judged terminal.

PATIENTS AND METHODS

From July 2005 to October 2006, we conducted a prospective cohort study of 481 terminally ill cancer patients at 11 university hospitals and the National Cancer Center in Korea. We assessed how the use of CAM affected HRQOL and survival.

RESULTS

In a follow-up of 481 patients and 163.8 person-years, we identified 466 deceased cases. On multivariate analyses, CAM users did not have better survival compared with nonusers [adjusted hazard ratio (aHR), 0.91; 95% confidence interval (CI) 0.74-1.10]. Among mind-body interventions, prayer showed significantly worse survival (aHR, 1.56; 95% CI, 1.00-2.43). Clinically, CAM users reported significantly worse cognitive functioning (-11.6 versus -1.3; P < 0.05) and fatigue (9.9 versus -1.0; P < 0.05) than nonusers. Compared with nonusers in subgroup analysis, users of alternative medical treatments, prayer, vitamin supplements, mushrooms, or rice and cereal reported clinically significant worse changes in some HRQOL subscales.

CONCLUSION

While CAM did not provide any definite survival benefit, CAM users reported clinically significant worse HRQOLs.

Complementary and alternative medicine use and breast cancer prognosis: a pooled analysis of four population-based studies of breast cancer survivors

BACKGROUND

Complementary and alternative medicine (CAM) use is common among breast cancer survivors, but little is known about its impact on survival.

METHODS

We pooled data from four studies conducted in Hawaii in 1994-2003 and linked to the Hawaii Tumor Registry to obtain long-term follow-up information. The effect of CAM use on the risk of breast cancer-specific death was evaluated using Cox regression.

RESULTS

The analysis included 1443 women with a median follow-up of 11.8 years who had a primary diagnosis of in situ and invasive breast cancer. The majority were Japanese American (36.4%), followed by white (26.9%), Native Hawaiian (15.9%), other (10.6%), and Filipino (10.3%). CAM use was highest in Native Hawaiians (60.7%) and lowest in Japanese American (47.8%) women. Overall, any use of CAM was not associated with the risk of breast cancer-specific death (hazard ratio [HR] 1.47, confidence interval [CI] 0.91-2.36) or all-cause death (HR 0.82, 95% CI 0.63-1.06). However, energy medicine was associated with an increased risk of breast cancer-specific death (HR 3.19, 95% CI 1.06-8.52). When evaluating CAM use within ethnic subgroups, Filipino women who used CAM were at increased risk of breast cancer death (HR 6.84, 95% CI 1.23-38.19).

CONCLUSIONS

Our findings suggest that, overall, CAM is not associated with breast cancer-specific death but that the effects of specific CAM modalities and possible differences by ethnicity should be considered in future studies.

Doctor-patient communication and cancer patients' choice of alternative therapies as supplement or alternative to conventional care

Cancer patients' use of complementary and alternative medicine (CAM) is widespread, despite the fact that clinical studies validating the efficacy of CAM remain sparse in the Nordic countries. The purpose of this study was to explore possible connections between cancer patients' communication experiences with doctors and the decision to use CAM as either supplement or alternative to conventional treatment (CT). The Regional Committee for Medical and Health Research Ethics and the Norwegian Data Inspectorate approved the study. From a group of 52 cancer patients with self-reported positive experiences from use of CAM, 13 were selected for qualitative interviews. Six used CAM as supplement, and seven as alternative to CT, periodically or permanently. Communication experiences with 46 doctors were described. The analysis revealed three connections between doctor-patient communication and patients' treatment decisions: (i) negative communication experiences because of the use of CAM; (ii) negative communication experiences resulted in the decision to use CAM, and in some cases to decline CT; and (iii) positive communication experiences led to the decision to use CAM as supplement, not alternative to CT. The patients, including the decliners of CT, wanted to discuss treatment decisions in well-functioning interpersonal processes with supportive doctors. In doctors' practices and education of doctors, a greater awareness of potential positive and negative outcomes of doctor-patient communication that concern CAM issues could be of importance. More research is needed to safeguard CAM users' treatment decisions and their relationship to conventional health care.