Scientists say they've located the first well-documented genetic glitch that increases a man's risk of impotence.
Most impotence isn't caused by genetics, but rather things like obesity, diabetes, heart disease, smoking, drug and alcohol use, stress or anxiety.
Still, scientists report they've found a spot in human DNA where genetic variation might boost a man's risk by about 25 percent.
The finding may someday lead to new treatments.
Read the study from Kaiser Permanente.
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