1 in 100 men have no sperm at all. Why is that happening?
Half of fertility problems are related to men, but unlike women, they’re much less aware and much more embarrassed to approach the subject.
Human sperm stained for semen quality testing in a clinical laboratory.(photo credit: BOBJGALINDO/CC BY-SA 4.0 (https://creativecommons.org/licenses/by-sa/4.0)/VIA WIKIMEDIA COMMONS)Updated: 
