This article points to some research which is by no means definitive. But there is a suggestion that overweight men may be at risk for fertility problems, just as it has been suggested for overweight women...
Male Infertility May Have Obesity Link - FOX News
 World Fitness | Male Infertility May Have Obesity Link FOX News - ... edition. It’s often hard to pin down the source of infertility. Men and women may each have risk factors for infertility. For ... |
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