Study Results from Arizona State University Update Understanding of Clinical Trials and Studies [Vitamin D Supplementation Appears to Increase Plasma…
A pilot randomized controlled trial in vitamin Dinsufficient older adults found that vitamin D supplementation (50,000 IU/week) increased plasma A?40 levels compared with placebo, with greater changes in participants aged 60 and older. The study suggests vitamin D may raise plasma A?40 and potentially reflect decreased brain A?, though the small sample size limits conclusions.