Key PointsQuestionDoes vitamin D supplementation improve survival among patients with digestive tract cancers? FindingsIn this randomized clinical trial that included 417 patients with digestive tract cancers (from esophagus to rectum), the 5-year relapse-free survival rate for those randomized to vitamin D, 2000 IU/d, vs placebo was 77% vs 69%, a difference that was not statistically significant. MeaningVitamin D supplementation did not improve relapse-free survival among patients with digestive tract cancer.
JAMA – American Medical Association
Published: Apr 9, 2019
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