Loose underwear may be good for sperm production

  • Loose underwear may be good for sperm production

Loose underwear may be good for sperm production

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.

Dr. Jorge Chavarro, associate professor of nutrition and epidemiology at Harvard, lead author of the study has explained that tight underwear in men such as briefs can raise the scrotal temperatures and this can contribute to a lower sperm count and infertility.

Some styles of underpants, such as jockey shorts or briefs, bring the scrotum nearer to the body, causing the testicles to warm up, while others, such as boxer shorts, are looser and cooler. FSH is the hormone that stimulates the testes to produce sperm.

The study was published August 8 in the journal Human Reproduction.

Guys with tighter-fitting pants also had higher levels of a hormone that encourages sperm production - likely to compensate for all the seed that gets fried in their high-temperature unmentionables, researchers said.

As part of the study, the men in couples who were seeking fertility treatments were quizzed about their underwear choices and which underwear do they usually prefer.

They provided semen and blood samples and answered a questionnaire on their choice of underwear. 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.

Did you know? The kind of underwear you wear can affect your sperm quality.

Men who wear tight-fitting briefs have sperm counts that suffer in comparison to men who wear boxers, according to results from the largest study to date on the controversial topic.

Results showed that men who preferred boxers had a 25 percent higher sperm concentration and a 17 percent higher sperm count. "This was reflected both in sperm concentration as well as in total sperm count". "Were it not for the higher FSH levels, their sperm count would probably be even lower", Chavarro said.

Men were asked to recall what underwear they prefer rather than actually being observed, and all of the men were seeking fertility treatment - so the findings might be have been different if other men had been involved in the test. The study, conducted by scientists at Harvard T H Chan School of Public Health, was done on 656 men.