How often is sperm refreshed?

Patient's question:

Hello doctor, I would like to ask how long it takes for sperm to regenerate? My wife and I are planning to have a child. If I have had sexual intercourse with my wife today and ejaculated once, how long should I wait to produce sperm that is capable of fertilization? Some people say it takes 90 days, is that really so long??? How long does it take for sperm to regenerate approximately?

Doctor's answer:

Sperm can be divided into animal sperm and plant sperm. In the sexual reproduction process of animals, sperm are male cells, reproductive cells of male animals, male gametes in anisogamy, and haploid reproductive cells produced by sperm sacs. In daily life, sperm more commonly refers to the mature reproductive cells of males, which are formed in the testes. Semen is an organic substance. Semen contains fructose and proteins, as well as some enzyme substances, inorganic salts, and organic salts.
The semen of human males consists of sperm and seminal plasma, with sperm being produced by the testes.

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