Tag Archives: Contraception

Male Contraception with One Simple Shot

For generations, preventing pregnancy has fallen mostly on women. Men have few ways to help, aside from often ineffective condoms.

With abortion now illegal in many states, the need for contraception is the greatest in 50 years.


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So I was excited to learn today about an amazing new male contraceptive called Contraline.

Contraline is an injectable gel that blocks sperm before they’re ever released. It has no effect on hormones and ejaculation happens as normal.

The roughly 30 minute procedure happens in an outpatient clinic and remains effective for at least a year.

The gel, called ADAM, is set to enter clinical trials this year.

It works by setting up a barrier in the vas deferens. This barrier blocks the sperm from leaving the body.

When the gel has reached the end of its lifespan, it liquefies, removing the barrier.

Development of male contraceptives has long been stifled by a lack of research funding. Government grants have gone mostly to contraceptive options for women.

But as more federal dollars and venture capital pour into male contraceptive development, things are beginning to change.

University of Minnesota researchers have developed a male birth control pill that’s 99% effective in mice. They hope to begin human trials this year.

A contraceptive gel for men is also in development. But that too is likely five years or more from market.

Should Contraline or another male contraceptive come to market, couples would have more options than ever. Many women find IUD’s painful and birth control pills fraught with side effects.

What’s more, men have had to trust their partners to handle contraception. If men could do it themselves, society may look much different.

John Reynolds-Wright, a male contraceptive researcher at the University of Edinburgh, may have said it best:


“Maybe I’m overstating how exciting it is, but I always think of it like the iPhone. We couldn’t have imagined how the iPhone would impact on our lives until it was invented. And actually, this is something that’s got the potential to completely, radically change how we talk about family planning, about relationships, about sex.”

I hope the awesome team at Contraline can get their product to market and change the lives of couples worldwide. If men and women can share the contraceptive burden more equally, we’ll have a better world!

What do you think the future holds for male contraceptives? Leave a comment at the bottom and let me know!

Have a great weekend everyone! 👋

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Male Contraception With an Ultrasound Device?

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Male Contraception With an Ultrasound Device?

A fascinating new device could one provide the elusive male contraceptive:

German design graduate Rebecca Weiss has won a James Dyson Award for a male contraceptive device called Coso, which uses ultrasound waves to temporarily halt sperm regeneration.

Weiss’s Coso device is designed to be a reversible contraceptive solution. To use it, a person would fill the device with water up to the indicated mark, turn it on so it heats to operating temperature, and sit for a few minutes with their testicles dipped into it.

Coso looks like it could be the newest Alexa. It even comes with an app to show where you are in the process.

Right now, this device is just a prototype and is not available to the public. Its technology is based on a published study in the journal Reproductive Biology and Endocrinology.

This study successfully used ultrasound currents on rat testes in order to reduce sperm count. It will take a lot more research to determine this is safe and effective in humans.

If it works, I think this innovation could be transformative. Most, if not all, of the burden of contraception is generally on women. Those methods often have significant side effects.

Perhaps there is a better way!

I think a startup like this would make a wonderful candidate for Y Combinator, which backs startups from all over the world in areas including biotech and medical devices.

Best of luck to the amazing Rebecca Weiss!

More on tech:

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