2022 VITAL TRIAL Supplemental Vitamin D and Incident Fractures in Midlife and Older Adults double-blind, placebo-controlled, 2×2 factorial, randomized controlled trial Objective: To investigate the effects of supplemental vitamin D3 as compared with placebo on incident fractures among generally healthy midlife and older U.S. adults 25,871 Inclusion criteria: Men 250 years & women 2 55 […]