If someone is sterile have they always been sterile?

Answer:

No, not always. There are some cases of primary sterility (where the person has always been sterile) but many times sterility is secondary to another factor. This could be infections such as mumps in adult men, surgeries such as vasectomies, hormonal imbalances, etc.

First answer by Uniquestar.7. Last edit by Uniquestar.7. Contributor trust: 220 [recommend contributor recommended]. Question popularity: 1 [recommend question].