Soy supplementation reduced total and subcutaneous abdominal fat in postmenopausal women. - GreenMedInfo Summary
Metabolic effects of soy supplementation in postmenopausal Caucasian and African American women: a randomized, placebo-controlled trial.
J Med Food. 2006 Spring;9(1):84-9. PMID: 20435291
Department of Obstetrics and Gynecology, the University of Alabama School of Medicine at Birmingham, AL, USA.
OBJECTIVE: We sought to determine the effect of daily soy supplementation on abdominal fat, glucose metabolism, and circulating inflammatory markers and adipokines in obese, postmenopausal Caucasian and African American women. STUDY DESIGN: In a double-blinded controlled trial, 39 postmenopausal women were randomized to soy supplementation or to a casein placebo without isoflavones. In all, 33 completed the study and were analyzed. At baseline and at 3 months, glucose disposal and insulin secretion were measured using hyperglycemic clamps, body composition and body fat distribution were measured by computed tomographic scan and dual energy x-ray absorptiometry, and serum levels of C-reactive protein, interleukin-6, tumor necrosis factor-alpha, leptin, and adiponectin were measured by immunoassay. RESULTS: Soy supplementation reduced total and subcutaneous abdominal fat and interleukin-6. No difference between groups was noted for glucose metabolism, C-reactive protein, tumor necrosis factor-alpha, leptin, or adiponectin. CONCLUSION: Soy supplementation reduced abdominal fat in obese postmenopausal women. Caucasians primarily lost subcutaneous and total abdominal fat, and African Americans primarily lost total body fat.