Does Soy offer a protective effect against breast cancer?

Among all the functional foods, soy products certainly capture consumers' attention. Soy, to be more specific, plant chemicals called isoflavones genistein found in soy, has displayed cancer-fighting activity in lab tests involving cancers of the prostate, breast and colon. While some studies showed soy offers a protective effect against breast cancer, a few studies showed the estrogen-like effects in isoflavones may be harmful for women with breast cancer.

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