Obesity and being overweight is linked to serious health conditions such as cardiovascular disease and diabetes. It’s also been linked to infertility, though a direct effect has not been reported.
Now a review of studies including over 10,000 men has found that overweight men are more likely to have sperm problems such as low or no sperm count.
Up to 25% of overweight men had a low sperm count, leaving these men 11% more likely to have a low sperm count and 39% more likely to have no sperm than normal-weight men.
Obese men face even more serious infertility effects. Obesity leaves men 42% more likely to have a low sperm count and 81% more likely to have no sperm at all.
Though these men suffered from decreased sperm count, the study did not find that they had more difficulty conceiving or could reverse the effects by losing weight.