For ages, the conventional wisdom about marijuana and male reproductive health was that one did not benefit the other. Weed was kryptonite for healthy sperm; don’t partake in one if you want the other. Scientific studies backed that up.
But all it takes is one new study to blow up what we thought we knew, and that study was published this month. After analyzing the ejaculate of more than 600 men, researchers from the Harvard T.H. Chan School of Public Health found that men who reported using cannabis had higher sperm counts than men who reported never using cannabis. That’s not what we, or the researchers, expected to hear.