National study to determine if vitamin D prevents diabetes

DALLAS Oct. 21, 2013 UT Southwestern Medical Center researchers are seeking 150 to 200 adults to take part in the local arm of a major national clinical trial that will investigate whether vitamin D helps prevent or delay development of type 2 diabetes.

http://www.utsouthwestern.edu/newsroom/news-releases/year-2013/oct/trial-raskin.html