How the type of underwear men wear can affect their fertility

Should You Wear Boxers Or Briefs? Science Finally Has The Answer

However, the study didn't look at the effect of switching underwear styles on sperm count, nor did it examine whether men who wear tight underwear had lower chances of conceiving a child. He also added that the average sperm levels on average for these men were fairly normal.

Although this study was not created to directly measure fertility, these results do suggest an easy way for men to help their chances of improving their fertility. Vij said. "We always struggle in our field to make that leap".

The theory is that higher temperatures caused by body-hugging underwear interferes with the testicles' ability to produce sperm, a process called spermatogenesis.

The researchers said this likely shows FSH levels increase when it needs to compensate for testicular damage indicated by increasing scrotal temperatures, and decreasing sperm counts and concentration.

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

Each participant also answered a questionnaire about the style of underwear they wore most frequently in the preceding three months. The men provided information on their underwear choice and a sperm sample and blood work for analysis.

Boxer shorts better for sperm health: Study.

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In a study of 656 men, by researchers at Harvard TH Chan School of Public Health, in the United States, boxer short wearers had a 25% higher sperm concentration than men in tight-fitting underwear. These differences were still apparent after accounting for factors like age or their level of physical activity. The authors feel that more research is required in this field covering more aspects like the fabric of the underwear, the different types of trousers wore etc.

Such future research will also need to cater for the fact that these findings can't be generalised for all men as those studied were attending a fertility centre.

Lead researcher, Dr Lidia Minguez-Alarcon, a research scientist at Harvard T.H. Chan School of Public Health in Boston, said: 'Since men can modify the type of underwear they choose to wear, these results may be useful to improve men's testicular function'. For instance, their body mass index, whether they are smokers or not, how much time do they spend in sitting down on a daily basis, or if they enjoyed hot baths or not.

The type of underwear the men wore was self-reported and not verified by researchers. "We're talking in the neighborhood of about 20 million sperm difference", he said.

But the team admitted they did not take into account what type of pants the participants wore.

A number of small-scale studies previously have linked tighter underwear to lower sperm counts, Chavarro said.

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

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