To make healthy sperm, the testicles need to be two to three degrees cooler than the body's core temperature. That's why the testicles hang below the body, inside the scrotum. If the testicles don't drop into the scrotum, they may not function normally and produce healthy sperm.
It has a higher temperature because an undescended testicle stays up in the body. A man's ability to fertilize a woman's egg and become a father is less likely as a result of lower sperm quality and quantity.
The inability of one or both testes to enter the scrotum. Occasionally, untreated undescended testes move into the scrotum. The chance that fertility will be affected is higher.
Until they are brought into the scrotum at a young age, undescended testicles cannot produce sperm. Men who had undescended testicles when they were young experience higher rates of infertility, even after surgical correction.
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