The team looked at data on men who were seeking treatment at a fertility centre in American between and , assessing the quality of their semen and asking the men to fill in questionnaires about their lifestyle, which included a question on whether they most frequently wore boxers, bikinis, briefs, or jockeys. Those who wore boxer shorts also had lower levels of follicle-stimulating hormone FSH , which stimulates sperm production. Researchers believe this is because FSH increases when the testicles are damaged by high temperatures, for example and need to overcompensate. You can also avoid damage to your balls — and your sperm as a result — by avoiding high temperatures such as in hot baths and hot tubs.
Your choice of underwear could affect a lot more than just your comfort level, according to a new study from researchers at Harvard. They found that men who reported wearing looser styles of underwear, such as boxers, had higher sperm concentrations and total sperm count, as well as healthier sperm, than those who reported wearing briefs. Tomer Singer , assistant professor at Hofstra School of Medicine and director of reproductive endocrinology and fertility at Lenox Hill Hospital in Manhattan. Researchers examined sperm samples from a group of nearly men seeking fertility treatment at a fertility center between and
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