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Fertility Glossary

Heat exposure and sperm

Why prolonged heat can lower semen quality.

Male fertility

Sperm production needs the testes slightly cooler than core body temperature. Frequent saunas and hot tubs, prolonged laptop use on the lap, and some very hot occupational settings may temporarily reduce semen quality. Any effect takes about three months to reverse, mirroring the sperm production cycle.

Also known as: saunas and sperm, hot baths fertility

Sources

  • Healthy Male (healthymale.org.au)

Last reviewed: 10 September 2026. Written by the Antega Editorial Team. General information only โ€” always follow the advice of your own clinic, doctor or pharmacist.

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