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

Men who wear boxer shorts have a higher sperm count than men who wear briefs

Blood samples collected from 304 of the participants also showed that men who wore boxers had 14 percent lower levels of a substance called follicle stimulating hormone, or FSH.

As it turns out, those who wear boxer shorts were found to have higher sperm concentrations that those who opt for tighter-fitting underwear.

They sought to test the theory that briefs, being more constricting, raise scrotal temperature and have a negative effect on fertility.

There was some good news: the type of underwear didn't affect the sperms' structure or their ability to swim forward.

While men who wore briefs had millions fewer sperm, that wouldn't be a problem in a man with a normal sperm count, Chavarro said. Therefore, to determine the cause of male infertility, you first analyze the amount and concentration of sperm.

It's known that higher testicular temperatures can negatively affect sperm production. "We're talking in the neighborhood of about 20 million sperm difference", he said.

When in comes to male fertility, it seems the old "brief versus boxers" debate has finally been settled.

While the sample size of the study is too small to apply the findings to the general population, the research indicates that your choice of underwear may have an impact on the quality of your sperm - and wearing boxers is best as your testicles aren't cramped and overheated.

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Men who wear tight underwear could increase their chances of having children by switching to looser fitting boxer shorts, scientists are recommending.

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. The rest wore tighter underwear.

Other lifestyle activities of these men were also seen.

Men who wore boxers also had higher percentages of motile sperm or sperm that are capable of moving through the female reproductive system and fertilizing an egg.

They should probably choose boxers next time. "There is a big difference between measuring aspects of sperm quality (as done in this study) and measuring fertility". Underwear choice had no effect on these other markers.

Regardless, if you're trying to fall pregnant, it might be worthwhile heading out to your local Kmart and picking up some boxers for your man.

"We were able to find a potential compensatory mechanism whereby decreased sperm production relating to the type of underwear signals to the hypothalamus to increase secretion of gonadotropin, a hormone that acts on the testes and that is reflected by the increased levels of FSH, to try to increase sperm production", said Dr Lidia Mínguez-Alarcón who led the study.

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