The multivitamins and other dietary supplements that many people take are likely to be worthless — or even harmful.
That’s the conclusion of a new study that tracked death rates among 38,772 women, with an average age of 62 at the start of the research, over a 19-year period.
The results of the study, published in the Archives of Internal Medicine, carry weight because more than half of American adults take vitamins or another supplement.
It found that women who took multivitamins were 2.4 percent more likely to die over the study period than women who avoided multivitamins. Among the other supplements examined, iron yielded the worst result, a death rate 3.9 percent higher among women who took it compared with their counterparts who didn’t.
As Time reports, elevated death rates also were linked to Vitamin B, folic acid, iron, magnesium, zinc and copper.
The one bright spot was calcium, which often is taken to protect against osteoporosis and bone fractures. Women in the study who used calcium had a nearly 10 percent lower risk of death over the 19-year period.
“Looking at our findings, and combined with previous studies, the overall main message is that there are no benefits to taking multivitamins or supplements, at least if the hope is to prolong life or prevent disease or cancer,” said Jaakko Mursu, a nutritional epidemiologist at the University of Minnesota and lead author of the study.
The researchers adjusted their numbers to filter out the effect of lifestyle factors such as weight, smoking, blood pressure and diet. In fact, the gap in death rates was especially noteworthy because, at the start of the study, the women who reported using vitamins and supplements were healthier than nonusers.
Mursu said the source of the problem may be that people take too much of a supplement, making them toxic rather than therapeutic.
Still, some experts warned against drawing sweeping conclusions from the research. Miriam Pappo, director of clinical nutrition at Montefiore Medical Center in New York, told USA Today that the results were “puzzling.”
“I wouldn’t conclude from this that you stop taking a standard multivitamin. Very few people eat the required amount of fruits and vegetables a day. It’s best to get your daily needs from food, but few people do that.”
The study’s authors also acknowledged that all of the people included in the study were white women, so the findings might not apply to other groups.
STUART SILVERSTEIN
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I agree with this article, we shouldn’t rely so heavily on multivitamins. Its not just multivitamins though, other supplements have proven to be harmful too. Check out http://nutritionfacts.org/?p=4597 (non-commercial,science based)