from University of Colorado Cancer Center
People who take more dietary supplements
than needed tend to have a higher risk of
developing cancer. Dr. Tim Byers at the
University of Colorado Cancer Center says it
is not clear why, but the new research
follows many years of observing that
people who ate more fruits and vegetables
tended to have less cancer. Dr. Byers is
one of a number of researchers who
wanted to see if taking extra vitamins and
minerals would reduce risk of cancer even
more. Thousands of patients were studied
over ten years. He told the American
Association for Cancer Research that some
supplements were not beneficial to health.
As an example, taking more than the
recommended dosage of beta-keratin
supplements increased the risk of lung
cancer and heart disease by twenty
percent.