HEATED car seats may keep your bottom nice and toasty, but beware: if you’re male, they could also be frying your vital equipment.
Optimal sperm production requires a temperature 1 to 2 °C below the core body temperature of 37 °C. This is one reason why the testicles hang outside the main part of the body. To test whether heated car seats might be raising scrotal temperatures above this threshold, Andreas Jung at the University of Giessen in Germany and his colleagues fitted temperature sensors to the scrotums of 30 healthy men, who then sat on a heated car…
