This Oct. 11, 2012 photo provided by the Brigham and Women's Hospital shows a monthly calendar vitamin pack used in a long-term study on multivitamins. America's favorite dietary supple

 

              This Oct. 11, 2012 photo provided by the Brigham and Women
This Oct. 11, 2012 photo provided by the Brigham and Women's Hospital shows a monthly calendar vitamin pack used in a long-term study on multivitamins. America's favorite dietary supplements, multivitamins, modestly lowered the risk of developing cancer in healthy male doctors who took them daily for more than a decade, the first large study to test these pills has found. The study was published online in the Journal of the American Medical Association on Wednesday, Oct. 17, 2012. (AP Photo/Brigham and Women's Hospital)