We actually are not sure that sperm counts are dropping globally. The quality of evidence is extremely poor: https://astralcodexten.substack.com/p/declining-spe

We actually are not sure that sperm counts are dropping globally. The quality of evidence is extremely poor: https://astralcodexten.substack.com/p/declining-sperm-count-much-more-than https://astralcodexten.substack.com/p/declining-sperm-count-... But no matter what effect they have, if you can't conclusively prove it after decades and millions of people, it's by definition pretty minor.