How many sperm are released with each ejaculation

Patient's question:

I haven't had sex for a long time. Last night after sexual activity, I felt that my semen was very little, which seems different from before. Is it because there are fewer sperm in my ejaculation? I want to ask, how many sperm are there in one ejaculation?

Doctor's answer:

Under normal circumstances, the amount of semen released during intercourse is approximately 2-6 milliliters, with each milliliter containing about 600,000 to 1.5 million sperm. The amount of semen is not constant. The quantity of semen is closely related to the amount of ejaculation. If the interval between ejaculation is short, the amount of semen released each time will be less. If the interval is long, the amount of semen released will relatively increase, resulting in more sperm.

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