In that 40-year span, researchers found that sperm counts more than halved in Western countries like Canada, the U.S., the U.K., and Australia — where sperm declines were the sharpest.

Eating too much saturated fat isn’t only bad for the heart; it may also help lead to a low sperm count, according to new research in The American Journal of Clinical Nutrition.

A 2025 report by Maven Clinic that surveyed over 500 men aged 25–49 found that among men currently trying to conceive, or planning to conceive in the future, over half (55%) would be motivated ...

But others, like Mr. Stone, are happy to go off. After his sperm count rebounded, last year he and his wife had a healthy baby boy. He has no plans to go back on finasteride any time soon.