“Nutritional Insurance” Raises Risk of Breast Cancer

Can “nutritional insurance” in the form of taking multivitamin supplements actually increase the risk of breast cancer? Swedish investigators followed more than 35,000 older women (49-083 at the beginning) for an average of 10 years, and discovered that after adjusting for known risk factors, the multivitamin users were 19% more likely to develop breast cancer. While this observational study cannot determine cause-and-effect, the authors indicate it is certainly biologically plausible.

PositiveTip: If you eat a healthy and varied diet there is really no need to take multivitamins.