internal medicine the case is closed supplementing the diets of adults with vitamins has no clear benefit and might be harmful. no benefit from taking multi vitamins? >> this was a very strongly worded editorial. it's based on three very large studies, one of the studies had over 450,000 participants. it's a big study known as placebo control. they gave some people the multi vitamin and gave some people sugar pill. they compared them, rate of significant heart disease or second heart attack, cognitive and memory problems and found these multi vitamins did not provide any benefit. the language, let me read it to you because the editorial was so strongly worded. most supplements do not prevent chronic disease or death, their use is not justified and they should be avoided. pretty strong language there, anderson, from this particular