A subclass of the flavonoids In contrast to the flavonoids, isoflavones have a much more limited distribution in nature Isoflavones found in soybeans include glycinin, daidzin, glycetin, and genistin These compounds are known antioxidants and genestin has been shown to influence signal transduction through its effect on several enzymes Isoflavones may have positive effects in humans such as cancer inhibition, increased bone strength, and a decrease in heart disease
in soybeans block the absorption of estrogen by cells, thus reducing the risk of certain estrogen-dependent malignancies such as breast cancer Other flavonoids in fruits and vegetables, from carrots to berries, block receptor sites for hormones that may promote cancer
Soybeans have been branded a superfood largely because of the isoflavones they contain These antioxidants may prevent cancer and other diseases because they protect the body from cell-damaging free radicals Isoflavones' identity as weak plant estrogens makes them a good alternative to synthetic hormones--easing hot flashes and other menopausal symptoms Good sources include soybeans, soy nuts, tofu, tempeh, whole soy milk, soy powders or capsules (make sure the label lists isoflavones) (LB)
A Plant phytoestrogen that may inhibit the production of cholesterol Back to Vegetable Groups article