Packing on too many pounds may cut down a man's chances of becoming a father. Researchers at Penn State's College of Medicine studied a small group of men and found that obese men were less likely to have fathered a child. Obese men were still less likely to become a father even if the men were otherwise healthy.
Scientists say too much body fat can cause a man's body to convert testosterone into estrogen, which lowers his fertility.
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