Taking a second look at estrogen and breast cancer risks

A new review of data from the Women’s Health Initiative suggests that estrogen therapy during perimenopause may offer some protection from breast cancer for certain women.

Joseph Ragaz, M.D., an oncologist and clinical professor at the University of British Columbia, says in his report that certain women who take estrogen only (but not progestin) for their symptoms may be protected from breast cancer.

Data from the Women’s Health Initiative shows that among 8,500 women with no family history of the disease, use of only estrogen  lowered breast cancer risk by 32 percent when compared with similar women taking a placebo. Among the 7,600 women with no history of benign breast disease, those taking estrogen had a 43 percent lower risk of breast cancer.

Learn more from The New York Times.

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