Ditch your Y-fronts to have a baby

Switching to roomier smalls could improve sperm quality a new study suggests

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.

The team of USA researchers examined data on 656 men who were part of couples seeking treatment at a fertility centre in America between 2000 and 2017. It was published Wednesday in the journal Human Reproduction.

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.

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

Scientists at the Harvard T H Chan School of Public Health tested 656 men and found that those who wore boxers had 25% more sperm per millilitre and 17% in each ejaculate than those that wore briefs, jockeys or smaller trousers.

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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.

Commenting on the research, Prof Allan Pacey, Professor of Andrology, University of Sheffield, said: "This study confirms my long-held belief that men with poor sperm quality could potentially improve things by wearing looser underwear and keeping their testicles as cool as possible".

"Men could improve their sperm production by easily changing their type of underwear".

Men who wear tight underwear could increase their chances of having children by switching to looser fitting boxer shorts, scientists are recommending. FSH is a hormone that is known to play a role in male fertility.

Follicle stimulating hormone is associated with sperm production, suggesting, researchers said, that the brain stepped up production of the hormone to compensate for the decreased sperm production in the men wearing tighter underwear.

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