Which dietary supplements can you really trust? Mayo Clinic dietitian weighs in

Recently the NY Attorney General's office uncovered what seemed to be widespread fraud in the dietary supplement industry, accusing four big retailers of selling supplements that were either contaminated or didn't contain what was listed on the label. So how do we know who to trust? Lisa Dierks, a registered dietitian at the Mayo Clinic, talked with Buck Feb. 27 about dietary supplements and how to make informed choices. You can see the Mayo's information on individual dietary supplements here.