Your Weed Habit May Be Messing With Your Sperm

April 4, 2025

cluster of marijuana leaves

(New York Times) – A growing body of evidence now shows that cannabis is destructive to male fertility.

Experts have long known that tobacco and alcohol use can impact male fertility. And since at least the 1970s, researchers have suspected that cannabis use has a similar effect. But only recently have they been able to describe how it affects sperm cells, bending their shape, slowing them down and changing their genetic material.

It’s not surprising, since many cannabinoids are toxic to living cells, said Gerald Berkowitz, a cannabis expert at the University of Connecticut. “If you take plant or animal cells and you put them on a cell culture plate, and you put THC on that plate, you’ll see the cells die around THC.” (Read More)