This week, the Annals of Internal Medicine—one of the world’s leading medical journals—published three studies evaluating the benefits of vitamins and dietary supplements.
The first study determined whether healthy people who received daily multivitamins had a lesser incidence of cancer or heart disease and whether they lived longer. The study was quite large, involving about 400,000 adults. Study participants were randomly divided into two groups: One group received daily multivitamins; the other didn’t. The authors found no difference in any medical outcome.
The second study examined about 6,000 men older than 65 to see whether daily multivitamins improved cognitive performance or verbal memory. The group that received multivitamins was indistinguishable from the group that didn’t.