Soy lowers estrogens associated with breast cancer

Postmenopausal women who regularly consume tofu and other soy-based foods have significantly lower levels of a class of estrogens normally associated with breast cancer risk, according to a new study.

The study found a link between soy-rich diets consumed by Asian women in Singapore and reduced levels of an estrogen called estrone, the predominant form of estrogen in women following menopause. High estrogen levels have been shown to increase the risk for breast cancer among postmenopausal women.

Led by Dr. Anna Wu of the Keck School of Medicine at the University of Southern California at Los Angeles the researchers found that levels of the hormone estrone were 15 percent lower among women who consumed the highest amounts of soy protein. The researchers published the results in the September issue of Cancer Epidemiology, Biomarkers & Prevention. [cancerfacts.com]

Posted May 2004 | Permanent Link


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