Cannabis risk to male fertility

SPERM from men who regularly smoke cannabis may fail to fertilise eggs because of premature “burn-out”, scientists said yesterday.

A study showed the sperm move too fast, too early and their numbers were also reduced. Cannabis smokers also produced significantly less seminal fluid than non-drug takers.

The findings, presented yesterday at the annual meeting of the American Society of Reproductive Medicine in San Antonio, Texas, suggest that cannabis use can impair male fertility.