TV watching lowers sperm count

Researchers surveyed 189 American men aged 18–22 about the amount of time they spent watching television and how often they exercised during the three months prior to the survey.

The researchers measured participants’ sperm concentration, motility, morphology and total sperm count.

They found television watching was inversely associated with sperm concentration.

Men who watched more than 20 hours of television a week had a 44% lower sperm concentration than men who did not watch television. The men who