Isoflavone, a type of phytoestrogen, is found in soy protein. It is a class of compound, substituted derivatives of isoflavone (e.g., genistein, daidzein, glycitein). Isoflavones exert antidiabetic and hypolipidemic effects by acting as peroxisome-proliferator activated receptors agonist. Isoflavones could participate in the regulation of adiposity and glucose metabolism. It was discovered, that isoflavone supplements prevented osteoporosis in women, by means of increasing bone mineral density and decreasing bone resorption marker urinary deoxypyridinoline.