“In several trials of older individuals at risk for vitamin D deficiency, vitamin D supplementation improved strength, function, and balance in a dose-related pattern,” write H.A. Bischoff-Ferrari, MD, MPH, from the University of Zurich in Zurich, Switzerland, and colleagues. “Most importantly, these benefits translated into a reduction in falls. Overall, however, results have been mixed for fall prevention with vitamin D; for example, several trials of vitamin D have had non-significant results.”