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Table 5 Effects of control and soy foods on on sex hormones

From: One year soy protein supplementation has positive effects on bone formation markers but not bone density in postmenopausal women

Measures Control (n = 27) Soy (n = 35) Control vs Soy
  Baseline 6 months Final Baseline 6 months Final P values
        Trtmt Time Trtmt × Time
FSH (mIU/mL) 41.0 ± 3.8 37.5 ± 3.8 36.4 ± 3.8 44.8 ± 3.4 47.6 ± 3.4 43.2 ± 3.4 0.143 0.195 0.235
E2 (pg/mL) 9.9 ± 4.1 12.3 ± 4.1 8.8 ± 4.2 12.7 ± 3.7 19.5 ± 3.7 17.7 ± 3.8 0.120 0.314 0.690
Estrone (pg/mL) 14.3 ± 4.3 21.9 ± 4.3 13.9 ± 4.4 19.6 ± 3.8 22.0 ± 3.9 22.4 ± 3.9 0.283 0.290 0.448
Estrone sulfate (ng/mL) 1.2 ± 0.4 1.9 ± 0.4 1.1 ± 0.4 1.8 ± 0.4 2.0 ± 0.4 1.9 ± 0.4 0.264 0.309 0.552
SHBG (nmol/L) 87.1 ± 9.2 81.3 ± 9.2 76.3 ± 9.3 105.3 ± 8.2 88.2 ± 8.2 90.0 ± 8.3 0.264 0.002 0.355
  1. Values are least squares mean ± SE. FSH = follicle stimulating hormone; E2 = 17β-estradiol; SHBG = sex hormone-binding globulin.
  2. No treatment effects were detected.