The declining sperm count thing is pretty controversial, though. While that first study in the early '90s sounded the semen alarm, it was followed by an analysis pointing out its flaws... THAT was followed by a study confirming the ORIGINAL study.
It's almost impossible to account for confounding variables; for example, sperm donors aren’t necessarily representative of the whole population. (It takes a special sort of person to jizz in a cup for money, after all.) Or maybe doctors simply know more about sperm now. “Some of it is just that we are performing more semen analyses... and seeing more of these issues,” Dr. Hernandez-Rey says.
Keep an eye on sperm
The doctors agreed that while it’s not time to freak out about declining sperm counts just yet, it’s definitely an issue to monitor. Dr. Werthman says one unexpected benefit this discussion is that it emphasizes male fertility.
"If people are having trouble getting pregnant, they need to pay attention to the male," Dr. Werthman points out. "People get treated on the woman's side, instead of addressing why there’s bad sperm and getting to the root of the problem." Placing responsibility for fertility solely in the hands of the woman, if you think about it, is pretty ridiculous to begin with.