Men who wear boxers have higher sperm count

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New research has found that men looking to boost their sperm count may want to swap their briefs for boxers.

According to a new study led by the Harvard T.H. Chan School of Public Health, semen and blood samples were collected from 656 men seeking treatment at a fertility center with their partners. The men were also asked what the type of underwear they wore the last three months.

Researchers found that while the subjects produced similar amounts of ejaculation fluid, boxer-wearers had 25% higher sperm concentration, 17% higher total sperm count, and better motility compared to those who wore jockeys or briefs.

Brief wearers' blood had more follicle-stimulating hormones, which are released by the pituitary gland and associated with sperm production. This suggests the gland may have been boosting hormone production to compensate for lower sperm numbers.

The Guardian reports that previous studies have found scrotal temperature to affect spermatogenesis, and that wearing loose-fitting underwear is better than tighter undergarments at keeping it cool.

But while the new study shows a link between type of underwear and fertility, more research is needed to account for other factors and establish clear causality.

RUNDOWN SHOWS:
1. Depiction of researchers surveying underwear types, collecting samples from men
2. Depiction of better sperm count, concentration, motility in men wearing boxers
3. Depiction of higher FSH levels in men wearing briefs
4. Depiction of scrotal temperature potentially affecting sperm production

VOICEOVER (in English):

"A Harvard study collected semen and blood samples from men seeking treatment at a fertility center with their partners, and surveyed the type of underwear they wore."

"Researchers found boxer-wearers had 25% higher sperm concentration, 17% higher total sperm count, and better motility compared to those who wore jockeys or briefs."

"Brief wearers' blood had more follicle-stimulating hormones associated with sperm production, which suggests the pituitary gland was working to compensate for lower sperm numbers."

"Previous studies have found that scrotal temperature affects spermatogenesis, and that wearing loose-fitting underwear is better than tighter undergarments at keeping it cool."


SOURCES:
Harvard T.H. Chan School of Public Health, The Guardian, USA Today
https://eurekalert.org/pub_releases/2018-08/htcs-bob080618.php
https://www.theguardian.com/lifeandstyle/2018/aug/08/wearing-boxer-shorts-boosts-sperm-count-scientists-say
https://www.usatoday.com/story/news/2018/08/08/boxers-briefs-choice-sperm-count-study/937220002/