– Why do testes require low temp for sperm production

Question

I know for a fact that the scrotum temp must be around 34.5°C. Why not lower? Why low temp in the first place and why not high temp?

In: 2

Answer 1

Body temperature ruins the sperm, at 37°C the proteins and overall the structure of the sperm decays pretty rapidly for a variety of reason, and since it needs to be stored until use (for up to 2 weeks) that’s not a good thing.

The best temperature isn’t necessarily 34.5°C, it may be lower, some studies found that sperm is well-preserved even at 20°C. But 34.5° is probably the lowest the scrotum can reach, as it’s still near our very hot body.