It is scientifically proven that men with a body mass index greater than 30 have poorer sperm quality and therefore have greater difficulties in getting a woman pregnant naturally.
The reason for this is that men with excess weight often have low levels of androgens, such as testosterone, the hormone responsible for regulating the formation of sperm in the testicles. As a consequence of this decrease in male sex hormones, spermatogenesis is affected and oligozoospermia may appear.
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