Obesity is strongly associated with low testosterone and red
This study aimed to assess penis growth and testosterone levels in obese versus normal weight children and adolescents, to evaluate a possible influence of obesity on genital development in boys and to establish a new method for measuring penis length that allows comparison of normal weight and overweight boys.

Researchers assessed anthropometric and genital development in 1130 boys from birth to 20 years of age. Testosterone levels were also measured. A new method for penile length measurement was employed in order to minimize errors when comparing obese and non-obese children. Penis length was measured with a gentle painless straight positioning on a centimetric ruler without stretching, which is doable from the first years of life until the end of adolescence.

Penis length and testosterone are strongly related in children during puberty. Penile length growth is significantly decreased (by about 10%) in obese boys when compared to normal-weight boys, with concomitantly reduced testosterone levels, across pubertal phases.

Conclusively, childhood obesity represents an important determinant of lower testosterone level and reduced penis development. A new method should be employed to improve penis measurement in normal-weight and overweight/obese boys. The possible significance of these observations for adult genital development and reproductive potential will require large longitudinal studies.

Source: https://academic.oup.com/jcem/advance-article-abstract/doi/10.1210/clinem/dgab535/6324604?redirectedFrom=fulltext
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