Monthly High-Dose Vitamin D Treatment for the Prevention of Functional Decline

Vitamin D deficiency has been associated with poor physical performance.To determine the effectiveness of high-dose vitamin D in lowering the risk of functional decline.One-year, double-blind, randomized clinical trial conducted in Zurich, Switzerland. The screening phase was December 1, 2009, to May 31, 2010, and the last study visit was in May 2011. The dates of our analysis were June 15, 2012, to October 10, 2015. Participants were 200...