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Study Shows Number of Moles Linked to Breast Cancer

CBS News reports on new research in PLoS Medicine that has found a link between the number of moles a woman has and her likelihood of developing breast cancer. Researchers asked women to report the number of moles on their left arm and then followed up 24 years later. They found that “among women with none, 8.5 percent developed breast cancer; that rate was 11.4 percent among women with 15 or more moles. Women with one to 14 moles fell in between, with almost 10 percent developing breast cancer.” Researchers suspect that the mediating factor is estrogen, which is responsible both for tumor growth and has been linked to the darkening and enlargement of moles.

Read the article published by CBS News.

Read the study in PLoS Medicine.