New Breast Cancer Study Published

The study was authored by Rebecca H. Johnson, MD; Franklin L. Chien, BA; and Archie Bleyer, MD, and was published last Wednesday in the Journal of the American Medical Association. It analyzed breast cancer data from the U.S. National Cancer Institute Surveillance, Epidemiology, an End Results (SEER) database.

The results: a nearly 90 percent increase in the incidence of advanced cancer in 25- to 39-year-old women from 1.53 per 100,000 in 1976 to 2.90 per 100,000 in 2009.

“Advanced breast cancer” refers to those cancers which, at the time of diagnosis, have usually already spread to other locations in the body, such as the bones, lungs, and brain.

Note: Since 2005 the World Health Organization has been warning the world that “combined estrogen-progestogen oral contraceptives and combined estrogen-progestogen menopausal therapy are carcinogenic to humans (Group 1)” — see http://www.iarc.fr/en/media-centre/pr/2005/pr167.html.

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