Masculine contraception
[This article was translated using AI, please feel free to contact me and point out any of its flaws]
Hello there, curious one! Thank you for visiting my blog, and even more so for taking an interest in this fascinating subject of male contraception. When I discovered the existence of this technique, I was surprised and outraged never to have heard of it, even though I’m quite curious in this area.
I always found it unfair to impose the burden of contraception on women, but lacking a viable alternative for men, I had put this feeling aside. And surprise, there is a viable, reversible, non-invasive method, and nobody talks about it?!?! I did my tests, my research, and today it’s my turn to tell you about it. Because gentlemen, know this, you can take control of your contraception, free your partner from these hormonal imbalances, and contribute to the intimate well-being of your other half if you wish!
Happy reading 😉
Disclaimer: My point of view on hormonal contraception and its dangers is only my own. Everyone is free to choose to use contraception or not, and the method that suits them best. I do not criticize your choices in any way. But I openly criticize a society that does not communicate all the choices to the people concerned and that prescribes the pill to everyone, without really properly educating young people and parents about the existing alternatives.

In short
Don’t want to read my lengthy explanations? Great, here’s a condensed summary:
- Thermal contraception = sticking your testicles to your body to warm them up so they no longer produce sperm.
- No hormones are involved, it’s a purely physical phenomenon.
- It’s very inexpensive (or even free if you’re a DIYer).
- There is no pain or discomfort.
- There are no side effects other than a slight decrease in testicle size.
- The technique takes 3 months to be effective.
- It is completely reversible. You stop when you want. One month after stopping, fertility is back to its maximum.
- The existing solutions are: the thermal slip (also called Boulocho, ball lifter, heating slip) and the thermal ring (Androswitch for example).
Thermal contraception, how does it work?
There are many sources that address this subject, but I will still share my idea of the thing, with images and dubious comparisons. For purists, please go to Wikipedia to learn about Artificial Cryptorchidism, and leave my article of vulgar plebeian alone.
The basic principle is this: your testicles are in a small wrinkled skin bag (scrotum) which has a very specific purpose: to keep your precious nuts at a temperature of 34-35 degrees Celsius. This is to allow a process with a pompous term: spermatogenesis, and in simpler terms: to create sperm.
So far so good, our ball bag is doing its job. But this is where the man of the 21st century comes in, determined not to become a parent. Every man will one day discover in his life (often during a brief moment of panic related to the loss of one of his family jewels) a small pocket in which the balls can “go up”. This is the inguinal pouch. Well, it turns out that this pocket can be a perfect home for our precious ones, because there is a tropical temperature of 37 degrees.

This temperature disrupts the creation of sperm, so that after raising your “valuables” in the warmth for 15 hours a day for 3 months, you should find yourself clinically sterile. I insist, every human is different, and to ensure that contraception is effective, nothing beats a medical examination (a spermogram).
A little reminder: contraception of this type, just like the pill, the hormonal IUD, the copper IUD, and all other existing variants are not foolproof. We arrive at a very low risk of procreation, but not non-existent. Risk 0 does not exist. This golden rule must always be kept in mind when deciding to have sex.
15 hours a day? That’s huge!
Well, not so much. You get used to it very quickly. In the end, it means putting on your accessory at the same time as your underwear in the morning, and taking it off at bedtime. You end up not noticing it anymore and it becomes automatic.
Is this thing comfortable? What about sports?
Totally! At first, it’s a bit surprising, you sometimes feel a little uncomfortable, but after the first few days of wearing it, you simply forget its presence.
For sports, it may be worth it for you to get a slightly tighter device, for the duration of the effort, or to calculate your daily wearing hours according to your effort. For my part, I do alpine hikes of several hours, snowboarding days, running, and I have never had a problem. I check that my ring does not slip about every hour or two, and everything goes perfectly well.
How much does it cost?
An Aneros costs 37 euros, and is delivered all over Europe. The other solutions have variable prices, and many use recycling and DIY to achieve contraception completely free of charge.
Accessory variations
Androswitch: silicone ring that allows you to raise your testicles. Practical to clean, small and hygienic, it was my choice.

Boulocho, ball lifter, thermal slip, heating slip, jockstrap: A textile undergarment. Requires machine washing, but is known to be softer on the skin, and more comfortable.
What if I forget one day?
Tough luck! If you forget for a few hours, you may still be able to catch up, and leave your device on during your sleep, to reach the total of 15 daily hours required by this method.
Too late? Don’t panic, just use condoms for the intercourse you will have in the next month (~30 days from forgetting). Then you are contracepted again, and you can have peace of mind (within the limits of realism, of course).
My analysis results (Spermogram)
To help you realize the reliability of this method, I decided to publish my fertility analysis results, carried out at the Fertas laboratory, at the Fribourg hospital, Switzerland, at a price of 150.- per analysis. French laboratories being cheaper, it is worth making a trip there if you are close to the border and Covid-19 is no longer causing problems.
I do not have initial analyses (which you should do before embarking on the adventure of thermal contraception, accompanied by your doctor if possible). Some events in my life having proved my fertility very clearly, I did not feel obliged to re-check
But afterwards, I did tests after 4 months of wearing the ring, then another test 4 months later, to ensure the stability of the method. And the results were very convincing. Moreover, since the beginning of my contraception, I have seen perfect effectiveness, over a total of ~100 intercourse. I have therefore been contracepted since August 2020, and am very satisfied with it. As for the interpretation of the figures from these analyses, I will not dwell on the subject, because I do not have the necessary knowledge. But based on the opinion of my doctor, on various online resources and on my personal experience, I have come to the conclusion that this method produces very conclusive results for me, and that I am clinically sterile, as expected. Victory!
If you want an analysis of your results by a qualified professional, it is also possible to join the official Androswitch Discord server where you will find a whole community of people using this contraception, as well as a channel in which you can post your results, and receive the opinion of a professional.

Final word
If you have followed my ramblings so far, I already owe you thanks. Thank you for taking an interest in this subject, thank you for documenting yourself, and thank you for perhaps working to bring us closer to a gender equality that has been unbalanced for far too long, in all areas combined. Thank you for breaking the codes by your way of thinking, for keeping your mind open to novelty and criticism. Thank you for supporting my writing, oh how disjointed and chaotic.
Feel free to contact me, ask me questions, point out my spelling mistakes, and help me refine my discourse through constructive and interested criticism! Looking forward to exchanging with you!
Until next time!
Resources
- Official Androswitch Discord (lots of information, online advice, interpretation of spermogram results, etc.)
- https://fr.wikipedia.org/wiki/Cryptorchidie_artificielle
- http://www.contraceptionmasculine.fr/andro-switch/
- https://www.magicmaman.com/andro-switch-l-anneau-contraceptif-masculin,3674560.asp
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