Obesity reduces male fertility

Researchers from the National Institutes of Health in the US have found that men with increased body mass index (BMI) are significantly more likely to be infertile than normal-weight men. The study of more than 25,000 couples found that men classed as clinically obese (BMI>30) were 36% more likely to be infertile than men of normal weight. Those who were classed as overweight (BMI 25-29.9) were ...

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