Soy isoflavones Soy isoflavones are naturaly present in the soy bean. The soy bean (Glycine max) has been known to man kind in its original area, Asia for 5000 years. Soy was considered as one of the 5 holy crops, besides rice, wheat, barley and millet.Soy has been used in the Western world only since the 20th century. The main components of soy are proteins, soy bean oil and carbohydrates. These are healthy components but the soy isoflavones are responsible for many of health benefits. Dried soy beans contain about 200 mg soy isoflavones per 100 g soy ***** most important soy isoflavones are daidzein and genistein. Soy isoflavones have a favorable effect on bone loss in Chinese postmenopausal women with lower bone mass: a double-blind, randomized, controlled trial. J Clin Endocrinol Metab. 2003 Oct;88(10):4740-7 Prevention of spontaneous prostate-related cancer in Lobund-Wistar rats by a soy protein isolate - isoflavone diet. Prostate 2000 Oct 1;45(2):101-5 Effects of a soy milk supplement on plasma cholesterol levels and oxidative DNA damage in men--a pilot study. Eur J Nutr. 1999 Jun;38(3):143-8 Absorption in humans of isoflavones from soy and red clover is similar. J Nutr 2002 Aug;132(8):2199-201 Soy, isoflavones, and breast cancer risk in Japan. Journal of the National Cancer Institute, Vol. 95, No. 12, 906-913, June 18, 2003 The long term effects of soy-based formula on isoflavone concentration of plasma and urine, and growth and recognition development at 10 and 20 months old infants. Asia Pac J Clin Nutr. 2004;13(Suppl):S123 Dietary soybean protein prevents bone loss in an ovariectomized rat model of osteoporosis. J Nutr. 1996 Jan;126(1):161-7 Intake of Soy Porducts is Associated with Better Plasma Lipid Profiles in the Hong Kong Chinese Population. Journal of Nutrition. 2000;130:2590-2593 Environmental Influence on Isoflavones and Saponins in Soybeans and Their Role in Colon Cancer. Journal of Nutrition 135: 1239-1242,