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Men who wear boxers have a much higher sperm count, says study

11 August 2018

Well, if one is wondering how does the type of underwear affect sperm concentration then here is the answer.

According to Chavarro, not all men need to change their underwear overnight but those who are having trouble conceiving should consider boxer shorts over briefs.

They also had 17 percent higher sperm count and 33 percent more swimming sperm in a single ejaculate.

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The men involved were aged between 18 and 56 who visited Massachusetts General Hospital between 2000 and 2017 as part of couples seeking fertility treatment.

Sperm production is known to be sensitive to temperatures above 34C (92F), which is why the testicles hang down away from the body. To understand this, the researchers first collected semen samples from 656 men between the ages of 32 and 39 and asked them what they preferred more, boxers or briefs.

"Since men can modify the type of underwear they choose to wear, these results may be useful to improve men's testicular function", lead researcher, Dr Lidia Minguez-Alarcon, a research scientist at Harvard TH Chan School of Public Health in Boston, said.

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Researchers also found that men who wore boxers had 14 percent lower levels of follicle-stimulating hormone (FSH). They add that for men with fertility problems, loose underwear has been advocated before.

"It is very important to recognize that the study does not prove a causal relationship between briefs and infertility, but rather an association between briefs and a lower, though still normal, sperm count that may or may not be a cause of infertility", she said.

But if that isn't enough to put men off of wearing them in favour of boxers, this new study just might. From the semen samples the team of researchers looked at total count of sperm, motility of the sperms, morphology or appearance of the sperm and the extent of DNA damage to the sperm.

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The results showed that men who chose looser-fitting undergarments like boxers had a higher average sperm count and concentration than men who frequently wore briefs. Thus, it can be inferred that wearing loser boxers can be helpful in improving sperm count, but the tighter ones will not make you infertile either. The study was published this week in the latest issue of the journal Human Reproduction.

Men who wear boxers have a much higher sperm count, says study