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Soy And Breast Cancer, Mandeep K. Virk-Baker
Soy And Breast Cancer, Mandeep K. Virk-Baker
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The incidence of breast cancer is lower in Asia as compared to Western countries. However, the breast cancer risk among Asian immigrants living in Western countries reaches nearly as high as the Western country, suggesting environmental factors (e.g. diet and lifestyle) may be important for this geographical disparity. One dietary change of Asian immigrants is a reduction in soy consumption. Soy is rich in isoflavones, which compete with estrogen for receptor (ER) binding, and may protect against breast cancer. S-(-)equol, a metabolite of the soy isoflavone daidzein (DZ) has a higher bioavailability and greater affinity for ER than DZ. The …