Results: The mean testosterone concentration in patients with type 2 diabetes was 351 ± 88.5 ng / dL lower than the control group 529.4 ± 136.5 ng / dL, the difference was statistically significant (p < 0.001); the rate of decrease in testosterone in the group of patients with type 2 diabetes was 44.6% higher than that in the control group, which was 6.3%; The difference was statistically significant (p < 0.001).