“This is one example of how risk factors can change over the course of a woman’s life,” she added. That risk is highest about five years after childbirth, but it lasts some 20 years. Now women who have recently had a child are in that higher risk group as well, said the study’s lead author, University of North Carolina epidemiologist Hazel Nichols. We’ve known for a while that women who smoke as well as women who have the BRCA1 and BRCA2 gene mutations are at a heightened risk. Why mammograms haven’t cut cancer deaths, explained in 500 words
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