Dietary Zinc For Diabetes Prevention Not Backed By Evidence

... Despite laboratory evidence that zinc helps promote the production and action of insulin -- and widespread marketing of zinc supplements for this purpose -- no randomized clinical trials show that zinc supplementation prevents the onset of type 2 diabetes. However, this doesn't necessarily mean that zinc doesn't have a role in diabetes prevention. Rather, eligible studies are lacking, according to authors of a new systematic review of clinical studies, led by Vania Beletate of the Federal University of Sao Paola in Brazil. ...