26 Jun '11, 1pm

Mammary Development/Breast Cancer: Breast cancer is cancer originating from breast tissue, most commonly from th...

Mammary Development/Breast Cancer: Breast cancer is cancer originating from breast tissue, most commonly from th...

Breast cancer is cancer originating from breast tissue, most commonly from the inner lining of milk ducts or the lobules that supply the ducts with milk. Factors across the woman life cycle, beginning before birth, influence breast cancer risk. This is known from epidemiologic studies of characteristics self-reported by older women or gleaned from medical records. For example, larger babies have a higher breast cancer risk decades later, while preeclampsia (pregnancy hypertension) is associated with a lower risk in daughters. Earlier puberty increases the risk, and women with fewer or no pregnancies have a higher risk later on. These factors span sensitive periods of breast development, prenatally and during puberty and pregnancy. If environmental chemicals have comparable effects during sensitive developmental periods, identifying these risks could lead to prevention. But...

Full article: http://www.enn.com/enn_original_news/article/42849

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