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CHICAGO (AP) — There is more evidence that taking vitamin E pills can be risky. A study that followed up on men who took high doses of the vitamin for about five years found they had a slightly increased risk of prostate cancer — even after they quit taking the pills.
Doctors say it's another sign that people should be careful about using vitamins and other supplements.
"People tend to think of vitamins as innocuous substances, almost like chicken soup — take a little and it can't hurt," said lead author Dr. Eric Klein of the Cleveland Clinic. The study shows that is not true.
The study involved about 39,000 women who were between the ages of 55 and 69 when the study began and were tracked for 19 years.
During that time, about 40 per cent of them died. When the researchers looked at who took vitamins, those who chose multivitamins had a slightly higher risk of death than those who took no supplements at all. The same was found for women who regularly took iron, vitamin B6, folic acid, magnesium, zinc and copper.