Abstract

Background: We are aware of no study examining the effects of Soy supplementation on patients with polycystic ovary syndrome (PCOS).This study was conducted to evaluate the effects of Soy supplementation on metabolic profiles in women with PCOS.

Materials and Methods: This randomized, double-blind, placebo-controlled clinical trial was conducted among 70 women diagnosed with PCOS. Participants were randomly divided into two groups to receive 50 mg Soy isoflavone supplements (n=35) or placebo (n=35) for 12 weeks. Fasting blood samples were taken at baseline and after a 12-week intervention to quantify related factors.

Results: Intervention group, subjects who received Soy supplements had significantly decreased total serum testosterone levels (-0.2±0.4 vs. +0.1±0.3 ng/mL, p=0.01) compared with the placebo. In addition, a significant rise in plasma glutathione (+96.0±102.2 vs. +22.7±157.8 µmol/L, p=0.04) and a significant decrease in malondialdhyde levels (-0.7±0.8 vs. +0.8±2.3, p=0.001) was observed following the consumption of Soy supplements compared with the placebo.

Conclusion: According to this study, Soy supplementation among PCOS women had beneficial effects on metabolic profiles.