Are You Wasting Money on Multivitamins?
An article in the February 9 issue of Archives of Internal Medicine reported that multivitamin use did not protect the 161,808 postmenopausal women enrolled in the Women’s Health Initiative Study from common forms of cancer, heart attacks, or strokes. And the numbers of deaths during the 8 years of the study were the same in vitamin users as in non-users. Still, it is important to recognize that this was an observational study, not a more meaningful clinical trial. Although these findings apply only to women, other studies have failed to show benefits of multivitamins in older men.
These results are not at all surprising for several reasons. No large study has shown that multivitamins significantly benefit healthy men and women. In addition, for some years physicians prescribed folic acid and vitamins B12 and B6 in the hopes of preventing heart attacks and strokes by lowering blood levels of homocysteine. (High blood levels of homocysteine are associated with an increased risk of coronary and other vascular diseases.) A number of recent studies, however, have shown that, while these vitamins do lower homocysteine levels, they do not prevent heart attacks or strokes.
