One could consider Americans poisoned by something, considering that 40% of the American population is obese (not just overweight) and sperm count has declined 50% in developed countries over the past few decades.
Hmm... is the sperm count stat normalized to the obesity problem? I keep hearing things about America’s declining health, some of which seem to be “mysterious” and concerning. But then I’m always reminded that a lot of it is just people being fat. People being fat sounds like a highly probable culprit for why sperm counts are dropping on average.