Women's Health Weekly
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Breast Cancer
Breast cancer risk higher with synthetic progestin than micronized progesterone
May 5th, 2005
Data from the large E3N-EPIC cohort study indicate that postmenopausal women's risk of breast cancer is higher when their hormone replacement therapy regimen includes synthetic progestins rather than micronized progesterone. Researchers said, "Most epidemiological studies have shown an increase in breast cancer risk related to hormone replacement therapy (HRT) use. A recent large cohort study showed effects of similar magnitude for different types of progestogens and for different routes of administration of estrogens evaluated. "We assessed the risk of breast cancer associated with HRT use in 54,548 postmenopausal women who had never taken any HRT 1...
Source: Women's Health Weekly (2005-05-05)
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