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Ethnic gaps in breast cancer linked to hormones

Posted Sep 12 2008 10:45am
Differences in estrogen levels may partially explain the ethnic disparities in breast cancer rates among U.S. women, new research suggests.

In a study of more than 700 postmenopausal women, researchers found that participants' blood levels of estrogen and "male" hormones, called androgens, varied by race and ethnicity. And the differences in estrogen, which fuels breast tumor growth, often paralleled ethnic differences in breast cancer risk.

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