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What factors affect sperm quality?
Andrew Thomson lists some of the factors that affect sperm quality, including smoking, flu, drinking, and lifestyle factors.
Transcript
Sperm production actually takes 81 days to make a single sperm cell. So things you were doing three months ago can actually affect your sample if you were to produce today. So things like flu, if you've had a big drinking session, and it just goes back to those lifestyle factors.

