Soy Protein

STUDY DESIGN. Seventy pre- and postmenopausal Japanese women between 40 60 years of age completed this randomized, double-blind, placebo-controlled study. Women were randomly assigned to either a soy isoflavone group (n=34) or a placebo-treated group (n=36). The subjects in the isoflavone group 100 mg/day of total isoflavones (20.9% daidzein, 4.5% genistein, 10.5%

glycitein) for 21 weeks.

RESULTS. Consumption of soy isoflavones daily for one year stimulated a small, but significant increase in bone health compared to baseline, while no change was observed in the placebo group. Also, body fat was significantly lower after soy isoflavone consumption compared to baseline and compared to the placebo group.

CONCLUSION. The data from this study indicates that daily consumption of 100 mg soy isoflavones appears to maintain and support bone health. Soy isoflavones also were able to decrease body fat content.

MEDICAL REFERENCE: Mori M, Aizawa T, Tokoro M, Miki T, Yamori Y. Soy isoflavone tablets reduce osteoporosis risk factors and obesity in middle-aged Japanese women. Clinical and Experimental Pharmacology and Physiology 2004; 31:S39-S41. (Abstract)

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