Multivitamins are a popular supplement taken by one-third of Americans, but there’s little evidence they actually benefit health, and in some cases they may have hidden risks. Learn whether you re taking them safely.
Many of us take supplements and multivitamins without realizing there's not much data on their health benefits. Dr. Garnet Anderson, a lead investigator for the Women's Health Initiative, breaks down findings from the COSMOS trial, which looked at whether multivitamins and cocoa extract can prevent cancer and heart disease.