How long does it take sperm to regenerate?
Making a sperm cell takes around two months, and semen refills within days. Here is the real timeline, and what it means for testing and lifestyle changes.
Topic
Fertility
Sperm health, semen analysis and the lifestyle factors that affect male fertility.
Lifestyle factors that affect male fertility: a practical guide
Weight, smoking, alcohol, cannabis, heat and sleep all show up in sperm studies. Here is how big each effect is, and where to start.