Nutritional Supplements (IMAGE) West Virginia University Caption WVU researcher Safi Khan, an assistant professor in the School of Medicine, performed an umbrella review of meta-analyses and randomized controlled trials. He found that many nutritional supplements and diets don't protect against cardiovascular problems and death. Credit Jennifer Shephard/WVU Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.