期刊
NUTRITION AND CANCER-AN INTERNATIONAL JOURNAL
卷 73, 期 1, 页码 16-30出版社
ROUTLEDGE JOURNALS, TAYLOR & FRANCIS LTD
DOI: 10.1080/01635581.2020.1734215
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The study found that calcium and vitamin D supplementation may be associated with reduced total mortality in cancer survivors, while supplementation with vitamin C, D, and E may be related to lower total mortality and cancer recurrence in breast cancer survivors.
To study post-diagnosis dietary supplement use in relation to total mortality, cancer mortality and recurrence among cancer survivors. PubMed and Cochrane Library were searched until April 2019 for observational studies (OS) and randomized clinical trials (RCT). Pooled risk ratios (RR) were calculated using random-effects models. Compared to no supplementation, calcium supplementation was associated with lower total (RR = 0.88, 95% confidence interval (CI): 0.77-1.00, I-2=0%, four OS) and cancer mortality (RR = 0.71, 95% CI: 0.53-0.95, I-2=0%, three OS) among all cancer survivors, and cancer mortality among colorectal cancer survivors (RR = 0.66, 95% CI: 0.47-0.94, I-2=0%, two OS). Vitamin D supplementation was associated with lower total mortality (RR = 0.86, 95% CI: 0.76-0.99, I-2=0%, three OS and two RCT). Among breast cancer survivors, supplementation with vitamin C (RR = 0.79, 95% CI: 0.68-0.92, I-2=0%, four OS), D (RR = 0.85, 95% CI: 0.72-0.99, I-2=0%, two OS), and E (RR = 0.76, 95% CI: 0.64-0.90, I-2=0%, three OS) was associated with lower total mortality, while multivitamins (RR = 0.79, 95% CI: 0.64-0.97, I-2=0%, two OS), vitamin C (RR = 0.76, 95% CI: 0.64-0.91, I-2=0%, two OS), and E (RR = 0.69, 95% CI: 0.55-0.85, I-2=0%, two OS) with lower cancer recurrence. Conclusions: Findings are mostly based on OS. More RCTs are needed to justify any recommendation for use.
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