Table 4

Plasma hormone concentrationsab

Equol excretors (n = 5)Equol non-excretors (n = 9)P
Testosterone (nmol/l)
Control0.70 ± 0.08*1.04 ± 0.080.01
Low-iso0.73 ± 0.07*1.04 ± 0.070.004
High-iso0.73 ± 0.06*1.05 ± 0.070.008
Androstenedione (nmol/l)
Control4.98 ± 0.5*6.83 ± 0.50.03
Low-iso5.48 ± 0.4*7.09 ± 0.50.04
High-iso5.72 ± 0.47.05 ± 0.50.10
DHEA (nmol/l)
Control18.9 ± 1.9*33.0 ± 2.30.0003
Low-iso20.8 ± 1.9*34.6 ± 2.80.0004
High-iso21.7 ± 2.2*32.9 ± 2.80.01
DHEA-S (nmol/l)
Control2795 ± 323*5550 ± 6920.002
Low-iso2961 ± 442*5705 ± 6570.002
High-iso2694 ± 291*5360 ± 6220.0007
Cortisol (nmol/l)
Control366.7 ± 46.9450.0 ± 21.70.08
Low-iso408.3 ± 31.7*503.5 ± 29.00.04
High-iso367.6 ± 26.3*459.1 ± 24.70.03
Prolactin (μg/l)
Control11.3 ± 1.014.7 ± 1.50.07
Low-iso12.6 ± 1.315.6 ± 1.80.24
High-iso13.4 ± 2.016.2 ± 2.20.39
SHBG (nmol/l)
Control40.8 ± 3.8*27.7 ± 2.60.007
Low-iso38.4 ± 3.928.5 ± 2.80.05
High-iso39.2 ± 3.3*28.1 ± 2.90.02
Insulin (pmol/l)
Control48.3 ± 11.458.9 ± 12.80.58
Low-iso42.3 ± 5.364.8 ± 11.30.08
High-iso39.2 ± 4.848.8 ± 6.70.33
  • a Mean ± SE; samples taken from days 2 to 5 of menstrual cycles 3 and 4.

  • b Values within rows with different symbols(*) are significantly different (P < 0.05).