The effects of excessive body weight and obesity on the reproductive potential of the male population of the Russian European North (Arkhangelsk), characterized by a specific northern adaptive metabolic type were studied. Spermogram values and levels of reproductive hormones were compared in men with normal and excessive body weights and with obesity, using body weight index and waist circumference as indicators of abdominal visceral obesity. Irrespective of the indicator used, the total count of spermatozoa and their concentration in the ejaculate were significantly lower in men with obesity than in overweight men. Serum testosterone concentration was lower in obese men in comparison with men with normal body weights. Higher spermatogenesis, but not testosterone values, were observed in men with excessive body weight vs. men with normal body weights or obesity, which was presumably a characteristic feature of the northern metabolic type.
The aim of this study was to compare hormonal, anthropometric and metabolic parameters in men of the komi ethnic group with (n=23, BMI ≥25 kg/м2) or without (n=39, 18.4≤BMI 25 kg/м2) obesity. Totally 62 males living in Komi Republic were included in the study. It has been established that obesity was accompanied by an increase in serum concentrations of cholesterol and low density lipoprotein cholesterol in comparison with control group indicating metabolic disturbance. The data shows the significant effect of BMI on testosterone and FSH serum concentration, but not on LH, estradiol, thyrotrophic hormone, thyroxin and triiodthyronin levels. Overweight and obese men had lower circulating testosterone and higher FSH level in comparison with the controls. The reproductive hormone changes in overweight and obese men can result in deleterious effects on sexual functions including erectile dysfunction, reduced libido and alteration in spermatogenesis
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