Wearing lose-fitting boxers could boost men's sperm count

Leslie Hanson
August 10, 2018

In a study of 656 men, by researchers at Harvard TH Chan School of Public Health, in the USA, boxer short wearers had a 25% higher sperm concentration than men in tight-fitting underwear.

"For most men, it's probably a nonissue", he concluded. This study has the largest sample size yet, including 656 male partners of couples seeking treatment at the fertility center of Massachusetts General Hospital in Boston.

Men in the study were between 18 and 56 years old.

The men, who were between the ages of 32 and 39, completed a survey that included questions about the style of underwear they wore in the previous three months.

Study participants were asked whether they wore boxers, jockeys, bikini, briefs or "other". The rest wore tighter underwear.

That's not the only advantage to looser fitting undergarments: Men who mostly wore boxers also had a higher percentage of what's known as motile sperm.


FSH promotes sperm production. However, I think it is a reasonable low cost and low risk lifestyle change that men with poor sperm quality can undertake to potentially improve their semen quality.

"It might be predicted that men who spend much of their day seated and also wear tight underwear would be most likely to suffer a fall in their sperm production due to scrotal heating", Prof Sharpe said. Further the levels of their FSH was 14 percent lower. They add that for men with fertility problems, loose underwear has been advocated before.

Regardless of the types of underpants worn, sperm counts were in the normal range. 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.

"This study does not necessarily suggest that men should alter their clothing preferences and tendencies; the study was conducted among men in an infertility clinic and the results may not be generalizable to men in the general population", she said. 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.

The full findings are present in the journal- Human Reproduction.

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