An isoflavonoid derived from soy products having antitumoral properties. It is one of the phytoestrogens along with genistein, seen to have favourable effects on breast cancer, osteoporosis, and menopause-related issues. Excessive dosages of all phytoestrogens may have negative repercussions including thyroid problems; further studies are ongoing. Fermented soy products have higher concentrations of daidzein. Phytin, another element in soy products can inhibit the absorption of minerals - another reason to carefully regulate your intake. find all NHC pages containing: daidzein