Sep 22, 2026 · 34 min · 15 segments
For the past 25 years, we’ve been hearing that male contraceptives are just a few years away. And then a few more… and then some more after that. So for something that has been in development for such…
Kaylee ByersHost
Stephanie PageGuest
Premal PatelGuest
From an evolutionary perspective, passing your genes on to the next generation is kind of the whole name of the game.

And over millions, nay, billions of years, if you can have a lot of babies and they live long and prosper, well, you're living that natural selection dream, baby.

But even though sex is a fundamental part of life, humans have a bit of a complicated relationship with that particular evolutionary imperative.

Because while we love making babies, we've also spent a very long time trying to master the art of not making them.

We have evidence of ancient Egyptians using linen, Romans using sheep and goat intestines.

And when it came to preventing pregnancy on the female side, well, things got more adventurous and also dangerous.

Early approaches included people inserting crocodile dung up there, drinking lead-contaminated blacksmith water, consuming mercury, and my personal favorite, a reported practice from New Brunswick involved dried beaver testicles steeped in alcohol.
One extra dirty beaver testini coming right up.

But then, in the 20th century, scientists started figuring out what was actually going on inside the reproductive system.


From an evolutionary perspective, passing your genes on to the next generation is kind of the whole name of the game.

And over millions, nay, billions of years, if you can have a lot of babies and they live long and prosper, well, you're living that natural selection dream, baby.

But even though sex is a fundamental part of life, humans have a bit of a complicated relationship with that particular evolutionary imperative.

Because while we love making babies, we've also spent a very long time trying to master the art of not making them.

We have evidence of ancient Egyptians using linen, Romans using sheep and goat intestines.

And when it came to preventing pregnancy on the female side, well, things got more adventurous and also dangerous.

Early approaches included people inserting crocodile dung up there, drinking lead-contaminated blacksmith water, consuming mercury, and my personal favorite, a reported practice from New Brunswick involved dried beaver testicles steeped in alcohol.
One extra dirty beaver testini coming right up.

But then, in the 20th century, scientists started figuring out what was actually going on inside the reproductive system.

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