Men who wear boxer shorts have far better sperm, study suggests

Wearing boxer shorts could help conception

"The study provides reasonably strong supporting evidence that wearing tighter underwear might cause mild, but significant, impaired sperm production in men", noted Richard Sharpe, an honorary professor from the University of Edinburgh's MRC Centre for Reproductive Health who was not involved in the research.

After adjusting for other factors like age, weight and the time of day the sample was collected, researchers found that men who wore boxers had a 25 percent higher concentration of sperm and 17 percent higher sperm count than those who favored other underwear styles.

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

The new study is one of the largest to examine the link between underwear type and sperm quality.

Men who wore boxers had higher sperm concentrations and total counts, compared with men who wore other underwear, according to new research led by Harvard T.H. Chan School of Public Health. FSH is a hormone that is known to play a role in male fertility. Successful sperm production requires an environment three to four degrees Celsius below body temperature.

Still, Eisenberg said that "if the current study can be consistently reproduced, then I think it's something we should discuss with all patients".

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Boxers have always been thought to be better for men's fertility. 345 men said that they liked boxer shorts, while 311 said that they wore tight underwear.

'There are also a number of confounding factors in the study because the group wearing boxer shorts were more likely to be younger, slimmer men but they also subjected their testes to higher temperatures by enjoying hot baths or Jacuzzis and wearing skinny jeans on top of their loose underwear. The rest wore tighter underwear.

Oi, you, in the tight trousers.

A study has found that men in Y-fronts produce less sperm compared with those who choose underwear that gives their testicles room to cool down. "There is a big difference between measuring aspects of sperm quality (as done in this study) and measuring fertility". "This was reflected both in sperm concentration as well as in total sperm count". "If you're trying to have a baby you want to be in the best shape of your life and have less adverse things happening".

The simultaneous presence of lower sperm counts and higher FSH among men wearing tight-fitting underwear suggested the presence of a compensatory mechanism whereby the decreased sperm production among men in tighter underwear signals the brain to boost production of hormones that stimulate the activity of the gonads to try to increase sperm production.

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