A large-scale population study found that dietary soy isoflavone intake of at least 1.5 mg daily was associated with a 21% lower risk of all-cause mortality in some women with breast cancer. Those women who benefited had hormone receptor-negative tumors or had never previously received hormone therapy. To put this in perspective, a 3 ounce serving of tofu provides about 19 mg isoflavones. An 8 ounce cup of soy milk provides about 6 mg isoflavones.
Get more details about soy in our complete scientific monograph. Learn about other natural medicines used for breast cancer in our course, Natural Medicines in the Clinical Management of Breast Cancer.
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