Contraceptive Underwear

"Le Boulocho" underwear claims to offer an all-natural form of contraception for men. It holds the testes close to the body, thereby raising their temperature and causing temporary sterility. However, it needs to be worn for 15 hours a day to reliably produce this result. And those should be waking hours, not sleeping ones.

Also, the underwear is not yet for sale, pending ongoing testing.

More info: (in French), Thermal Male Contraception

Back in the 1970s, some researchers compared the spermatozoa of humans to that of the other great apes and found that humans tend to have a much higher percentage of abnormal (and presumably defective) spermatozoa. For instance, 18.4% of the human spermatozoa was irregularly shaped, compared to just 0.2% for chimpanzees. The researchers suggested that "testicular damage caused by clothing-induced hyperthermia" was one possible explanation for this high percentage. So arguably all underwear and pants may be slightly contraceptive.

Reference: "Morphological abnormalities in spermatozoa of man and great apes," Nature - Nov 1977.
     Posted By: Alex - Wed Sep 14, 2022
     Category: Underwear

Holy crap -- this was known in 1977. Why have we been wearing clothes all this time??

That electro-ejaculation sounded like fun until I read it requires a general anesthetic in humans. I decided to pass, since I've already had my general for this year.

Posted by Virtual in Carnate on 09/14/22 at 08:37 AM
Fertility doctors tell men to wear boxers rather than briefs and to avoid heated car seats.
Posted by ges on 09/16/22 at 07:39 AM
Here I am, wearing boxers and no-one to test the theory on...
Posted by Richard Bos on 09/18/22 at 08:34 AM
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