A Systematic Review of the Benefit of B-Vitamins as a Complementary Treatment in Cancer Patients.

B-vitamins act as enzymatic co-factors in immune functions, therefore they are considered to reduce chemotherapy-induced side effects in cancer patients. We conducted a systematic search, screening five electronic databases (Embase, Cochrane, PsychInfo, CINAHL and Medline) to find studies on the effectiveness and potential harm of B-vitamin therapy on cancer patients. Out of the 7465 search results, 11 RCTs about vitamin B6, B12 and B-vitamins in combination were included in this systematic review. A total of 1546 patients with diverse types of cancer were evaluated. Overall, most studies were of acceptable quality and reported consistent results. Studies examining the effectiveness of vitamin B6 reported that there is no significant impact on decreasing the incidence and severity of chemotherapy-induced side effects (e.g., hand-foot syndrome), the necessity of chemotherapy dose-modifications or improving patients' quality of life, tumor response/progression, and overall survival. Two studies reported that vitamin B12 could be effective in the alleviation of symptoms resulting from chemotherapy; it might decrease motor, sensory and pain symptoms of peripheral neuropathy. However, a combination of B vitamins may not reduce the incidence of chemotherapy-induced peripheral neuropathy. All in all, the evidence on B-vitamins in cancer patients is low and supplementation cannot be recommended.

Fasting during cancer treatment: a systematic review.

BACKGROUND: Clinical data on the modern topic fasting among cancer patients are rare. This review aimed to summarise published clinical data on fasting and its effects on patients undergoing chemotherapy and therefore to give some directions in advising patients with the desire to fast. METHOD: A systematic search was conducted searching five electronic databases (Embase, Cochrane, PsychInfo, CINAHL and Medline) to find studies concerning the use, effectiveness and potential harm of fasting during therapy on cancer patients. The main endpoints were quality of life, side effects and toxicities of the fasting intervention. RESULTS: The search results totaled 3983 hits. After systematic sorting according to standardised pre-defined criteria, nine publications which covered eight studies with 379 patients were included in this systematic review. The majority of the patients included were diagnosed with breast- and gynaecological cancers. Fasting duration and timepoints ranged significantly (24-140 h before, and on the day of, chemotherapy to 56 h after chemotherapy). In one study patients were fasting before cancer surgery. The studies were mostly low to moderate quality and reported heterogeneous results. Overall, the studies were insufficiently powered to detect significant effects on the predefined endpoints. CONCLUSION: Fasting for short periods does not have any beneficial effect on the quality of life of cancer patients during treatment. Evidence on fasting regimes reducing side effects and toxicities of chemotherapy is missing. In contrast, as the negative effects of unintentional weight loss are known to impact clinical outcomes severely, fasting is not indicated in this context.

Bioenergy therapies as a complementary treatment: a systematic review to evaluate the efficacy of bioenergy therapies in relieving treatment toxicities in patients with cancer.

PURPOSE: Bioenergy therapies are among the popular alternative treatment options for many diseases, including cancer. Many studies deal with the advantages and disadvantages of bioenergy therapies as an addition to established treatments such as chemotherapy, surgery, and radiation in the treatment of cancer. However, a systematic overview of this evidence is thus far lacking. For this reason, the available evidence should be reviewed and critically examined to determine what benefits the treatments have for patients. METHODS: In June 2022, a systematic search was conducted searching five electronic databases (Embase, Cochrane, PsychInfo, CINAHL and Medline) to find studies concerning the use, effectiveness and potential harm of bioenergy therapies including Reiki, Therapeutic Touch, Healing Touch and Polarity Therapy on cancer patients. RESULTS: From all 2477 search results, 21 publications with 1375 patients were included in this systematic review. The patients treated with bioenergy therapies were mainly diagnosed with breast cancer. The main outcomes measured were anxiety, depression, mood, fatigue, quality of life (QoL), comfort, well-being, neurotoxicity, pain, and nausea. The studies were predominantly of moderate quality and for the most part found no effect. In terms of QoL, pain and nausea, there were improved short-term effects of the interventions, but no long-term differences were detectable. The risk of side effects from bioenergy therapies appears to be relatively small. CONCLUSION: Considering the methodical limitations of the included studies, studies with high study quality could not find any difference between bioenergy therapies and active (placebo, massage, RRT, yoga, meditation, relaxation training, companionship, friendly visit) and passive control groups (usual care, resting, education). Only studies with a low study quality were able to show significant effects.

Influence of ballroom dancing on fatigue, body image, self-efficacy, and endurance of cancer patients and their partners.

Physical activity has a high importance for cancer patients. The present study aimed to evaluate the influence of ballroom dancing on fatigue, body image, self-efficacy, and functional exercise capacity for patients with cancer. We collected data among participants of a regular dance training program for cancer patients with a questionnaire including the Body Image Scale (BIS), Brief Fatigue inventory (BFI), Short Scale for Measuring General Self-efficacy Beliefs (ASKU), and the 6-min walking test (6-MWT). 66 participants took part in the study, and among them, 39 participants also engaged in the 6-MWT: dance experience and the weeks of dance training were significantly associated with a higher walking distance in the 6-MWT. Participants with dance experience showed higher self-efficacy scores than participants without. Participants rated the influence of dancing on partnership positively. However, the dance training had no significant effects on fatigue or body image. Ballroom dancing may improve functional exercise capacity, and dance experience may be associated with a high self-efficacy and active lifestyle, which can be beneficial for cancer patients during and after treatment. Further studies are needed to assess the influence of ballroom dancing more deeply on physical activity and fitness and to learn more on impact on the partnership. As ballroom dancing seems to improve physical activity and wellbeing and can promote intimacy between partners, this intervention has the potential to support cancer survivors in various levels.

Zinc as a complementary treatment for cancer patients: a systematic review.

Zinc is a trace element that plays an important role in the immune system and cell growth. The role of zinc in cancer treatment has been discussed for some time, however without reaching an evidenced-based consensus. Therefore, we aim to critically examine and review existing evidence on the role of zinc during cancer treatment. In January 2019, a systematic search was conducted searching five electronic databases (Embase, Cochrane, PsychINFO, CINAHL and PubMed) to find studies concerning the use, effectiveness and potential harm of zinc therapy on cancer patients. Out of initial 5244 search results, 19 publications concerning 23 studies with 1230 patients were included in this systematic review. The patients treated with zinc were mainly diagnosed with head and neck cancer and underwent chemo-, radio- or concurrent radio-chemotherapy. Interventions included the intake of different amounts of zinc supplements and oral zinc rinses. Outcomes (primary endpoints) investigated were mucositis, xerostomia, dysgeusia, pain, weight, dermatitis and oral intake of nutrients. Secondary endpoints were survival data, quality of life assessments and aspects of fatigue, immune responses and toxicities of zinc. The studies were of moderate quality reporting heterogeneous results. Studies have shown a positive impact on the mucositis after radiotherapy. No protection was seen against mucositis after chemotherapy. There was a trend to reduced loss of taste, less dry mouth and oral pain after zinc substitution. No impact was seen on weight, QoL measurements, fatigue, and survival. The risk of side effects from zinc appears to be relatively small. Zinc could be useful in the prevention of oral toxicities during irradiation. It does not help in chemotherapy-induced side effects.