Dense breasts raise risk of breast cancer
 

A new study supported by the National Cancer Institute found a higher cancer risk for women with dense breasts. It's the tissue in women's breast that can differ by heredity, from more fatty to more dense tissue. Fatty tissue shows up dark on a mammogram, but fibrous or dense tissue shows up white. So do small tumors, which can make them hard to find. The study was published in the July 27 online edition of the Journal of the National Cancer Institute.

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