This is your sperm on drugs

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There’s been evidence for years that heavy marijuana use damages men’s fertility, and researchers may have finally figured out how. It appears that THC, the active ingredient in marijuana, may have pretty much the same effect on sperm that it has on humans.

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NEW SCIENTIST reports that when sperm in test tubes were treated with high levels of THC, rather than swimming briskly like gametes with places to go and people to see, they meandered lazily, not getting very far. If they did happen to reach an egg, they seemed unable to bind to it and penetrate. “It really stops them cold,” said one researcher.

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THE TRUTH...

is the first thing despots go after. An unwavering commitment to it is probably what draws you to Mother Jones' journalism. And as we're seeing in the US and the world around, authoritarians seek to poison the discourse and the way we relate to each other because they can't stand people coming together around a shared sense of the truth—it's a huge threat to them.

Which is also a pretty great way to describe Mother Jones' mission: People coming together around the truth to hold power accountable.

And right now, we need to raise about $400,000 from our online readers over the next two months to hit our annual goal and make good on that mission. Read more about the information war we find ourselves in and how people-powered, independent reporting can and must rise to the challenge—and please support our team's truth-telling journalism with a donation if you can right now.

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