Fertility in overweight or obese Men

Background: Overweight and obese men have worse sperm quality than men of healthy weight. Being overweight or obese can also cause hormonal changes that reduce fertility and make men less interested in sex. Men who are very overweight are also more likely to have problems getting an erection. Together, these factors reduce the chances of men who are overweight or obese fathering a child.Methods: This article is an overview of fertility in overweight or obese men.Result: Studies showed that overweight men who had a body mass index (BMI, a measure of weight in relation to height used to measure obesity) over 25 had a nearly 22% lower sperm concentration and 24% lower total sperm count compared with healthy weight men. A BMI over 25 is considered overweight and a BMI over 30 is considered obese .Also, the results showed that with the increase in men s weight, bloodtestosterone levels decreased. There is now emerging evidence that male obesity impacts negatively on male reproductive potential not only reducing sperm quality, but in particular altering the physical and molecular structure of germ cells in the testes and ultimately mature sperm. Recent data have shown that male obesity also impairs offspring metabolic and reproductive health suggesting that paternal health cues are transmitted to the next generation with the mediator mostly likely occurring via the sperm.Conclusion: There is emerging evidence that male obesity negatively impacts fertility through changes to hormone levels, as well as direct changes to sperm function and sperm molecular composition. Nutritionally induced alterations to both the physical and molecular composition of sperm evidently implicates it as the mediator of these impacts on both the father’s fertility and the health of the next generation. There is now evidence that male obesity impacts negatively on male reproductive potential not only reducing sperm quality, but in particular altering the physical and molecular structure of germ cells in the testes and ultimately mature sperm.

کلیدواژه ها:

Fertility ، Obesity ، Sperm ، Male