Clinical Trial of Vitamin D3 to Reduce Cancer Risk in Postmenopausal Women
Abstract
To determine the effect of increasing serum 25(OH)D from prevailing levels with vitamin D3 supplementation, while maintaining adequate calcium intake, on incidence of all-type cancer in a population sample of healthy postmenopausal women.
Conditions: Cancer.
Primary outcome: all-type cancer (excluding non-melanoma skin cancers).
Enrollment: 2303 participants.
How strong is the evidence?
Evidence Hub reads this as a clinical trial, done in people. Its evidence level is 3 of 5 (Moderate · trial / cohort / secondary analysis). Trials without a large randomized design, cohorts and secondary analyses give moderate evidence. Reported size: 2,303 participants or records.
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