High-dose oral vitamin D supplements taken for one year significantly improved cardiac structure and function in patients with chronic heart failure (CHF) secondary to left ventricular systolic dysfunction, according to results from a new study published online in the Journal of the American College of Cardiology. However, the study, led by Dr. Klaus Witte of the University of Leeds (England), found that 6-minute walk-distance—the study’s primary outcome measure—was not improved after a year’s supplementation with vitamin D. For more on the study, go to Cardiology News: http://www.ecardiologynews.com/specialty-focus/heart-failure/single-article-page/high-dose-vitamin-d-improves-heart-structure-function-in-chronic-heart-failure/ddee3f3aef17d20293b99a606045ef98.html.