Excerpt from Healthy Diet and Nutrition for Women
Flavanols, namely polyphenols and catechins, also bind to receptor sites, which is why they have been found to be so beneficial in protecting women from cancer. By binding to breast tissue estrogen receptors sites, polyphenols work to prevent carcinogens (tumor promoters, hormones, and growth factors) from binding to and harming the cells. In essence, the polyphenols “seal off” the tissue from invasion by carcinogens.
The superior antioxidant properties of polyphenols also help in the fight against heart attacks and other forms of cardiovascular disease. Japanese researchers have found that tablets of green tea extract providing 254 mg of catechins raised blood levels of antioxidants and reduced plaque-forming oxidation.
Foods rich in bioflavonoids include citrus fruits (lemons, oranges, tangerines, grapefruits, and limes) and buckwheat (a gluten-free grain that is not botanically related to wheat). Other good sources are apricots, cherries, grapes, plums, blackberries, papayas, green pepper, broccoli, and tomatoes. Foods rich in flavanols include green tea, apples, grapes, and onions.anti-oxidant, cancer, estrogen, flavanols