Untitled Document
There have been no toxic side effects associated with daidzein, but because it is a phytoestrogen, there has been some concern that it could actually stimulate the growth of estrogen-stimulated cancers or interfere with the action of birth control pills. Men and women diagnosed with estrogen-related cancers should not consume isoflavones, as there is some research that suggests that genistein and daidzein may aggravate these conditions. *