Men need to be cautious about taking multivitamins more than once a day, for a new study has found doing so may increase the risk of prostrate cancer.
The researchers conducting the study also found that though there was no link between multivitamin use and the risk of developing localized prostate cancer, men who took multivitamins more than once a day were 32 percent more likely to develop advanced prostate cancer.
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However, the researchers warn that the study had its limitations.
They pointed out that it was not designed to determine whether multivitamins actually caused cancer; it did not ascertain which multivitamins were taken; and the results failed to establish a relationship between dose and response.
Moreover, other studies have shown no connection between prostate cancer and multivitamins.
Harvard Men's Health Watch, which published the study, suggests that a good diet and other lifestyle changes may help lower prostate cancer risk.
The publication also suggests that though the new study cautions against excessive multivitamin use, it does not show harm from a daily supplement that sticks to the recommended daily amounts of the standard vitamins.
The study appears in the October 2007 issue of Harvard Men's Health Watch.
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