WASHINGTON (Reuters) - People who take selenium supplements in the hope of preventing diabetes may actually worsen their odds, U.S. researchers said on Monday. An unusually well-controlled trial ...

Doctors were excited when trials of men who smoked or had skin cancer showed, surprisingly, that ingredients in common multivitamins may help prevent prostate cancer. The results looked promising ...

Many believe supplements offer protection against diseases like cancer, but research suggests caution. Studies reveal that high-dose supplements, including beta-carotene, vitamin E, and folic acid, ...