Health claim

“Wearing tight underwear or cycling frequently raises scrotal temperature and reduces sperm quality.”

Claim checked — strong evidenceLow riskother

Evidence Summary

Multiple well-designed studies consistently support this claim.

Thermal stress is a recognized factor that can impair spermatogenesis; studies link tight underwear to higher scrotal temperature and lower sperm counts.

Extracted from

How To Boost Men's Fertility I International Men's Health Week I OnlyMyHealth

OnlyMyHealth

The video offers brief tips on enhancing male fertility during International Men’s Health Week, presented by OnlyMyHealth.

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Wearing tight underwear or cycling frequently raises scrotal temperature and reduces sperm quality. — Evidence Review — MenHealth Digest