Because of their structure, phytoestrogens can exert estrogen-like effects. They can also block the effects of your natural supply of estrogen. Soy foods contain isoflavones — a type of phytoestrogen. Some evidence suggests that soy foods may be linked to- lower risk of endometrial cancer and lower risk of bone loss in women. Our body converts lignans, another type of phytonutrient, into chemicals with some estrogen-like effects. Two especially good sources of lignans are: Flaxseeds, Sesame seeds. However, research supporting a role for lignans in preventing endometrial cancer or osteoporosis is limited.
Foods rich in phytoestrogens are : soy, kidney beans, lentils, split pea etc.