Centers for Disease Control release on a study of nutritional supplements. Category includes vitamins, protein supplements and products promising muscle growth. “It turned out that at least half of the ingredients have no documented medical effect” quote from Ross Halleck, medical epidemiologist at the National Center for Environmental Health and Injury Control and a member of the study team. Study concluded that many of the nutritional supplements have no medical support for their advertising claims. (CDC headquartered in Atlanta.)