This Oct. 11, 2012 file photo provided by the Brigham and Women's Hospital shows a monthly calendar vitamin pack used in a long-term study on multivitamins. Multivitamins might help lower the risk for cancer in healthy older men but do not affect their chances of developing heart disease, new research suggests. (AP Photo/Brigham and Women's Hospital, File)

Associated Press
This Oct. 11, 2012 file photo provided by the Brigham and Women's Hospital shows a monthly calendar vitamin pack used in a long-term study on multivitamins. Multivitamins might help lower the risk for cancer in healthy older men but do not affect their chances of developing heart disease, new research suggests. (AP Photo/Brigham and Women's Hospital, File)
This Oct. 11, 2012 file photo provided by the Brigham and Women's Hospital shows a monthly calendar vitamin pack used in a long-term study on multivitamins. Multivitamins might help lower the risk for cancer in healthy older men but do not affect their chances of developing heart disease, new research suggests. (AP Photo/Brigham and Women's Hospital, File)
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