Mobile phones might cause lower sperm count

Global sperm counts have been declining for decades, and although researchers have many hypotheses, no one knows exactly why. A new study out of Switzerland may add another potential risk factor to the list: mobile phones. (Also read: Decoding the rapid decline in sperm count)

After analyzing the semen samples of more than 2,800 young men, Swiss researchers found an association between a higher frequency of self-reported mobile phone use and lower sperm concentration in a study published this week in the journal Fertility and Sterility.

They did not find a difference in sperm motility or morphology between the different types of phone users.