Observations
As increasingly early puberty ups breast cancer risk, researchers search environment for clues
November 30th, 2009 |
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NEW YORK—Women who reach puberty early have a higher risk of developing breast cancer than those who reach it late. So as the age of puberty’s onset among U.S. girls continues to drop, researchers are trying to figure out why—and how this growing risk factor might be avoided. Although mutations on BRCA genes can increase [...]
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