Multivitamins reduce the risk of cancer
Long term use of multivitamins can reduce the risk of colon cancer by as much as 75 per cent.
This finding comes from an analysis of food questionnaires given to 88,756 women in the Nurses' Health Study. Although short term use did not alter colon cancer risk, women who had taken vitamins for more the 15 years had significantly lower risk.
Researchers speculate that the folate contained in multivitamin preparations may exert a protective effect (Ann Intern Med, 1998; 129: 517-24).