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A member asked:
If it takes just 1 sperm to fertile egg, y r men with low sperm count infertile. does precum really cause pregnancy?
A doctor has provided 1 answer
Odds ratio: Sperm have to swim upstream the equivalent of a human swimming 8 miles. Not all of them will survive. The odds are better of 1 making the journey if there are millions to start. Pre ejaculatory fluid can contain enough sperm per drop so one might make it to the egg. Thanks for trusting HealthTap!
Answered 9/29/2014
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