Add Yahoo as a preferred source to see more of our stories on Google. We've done it to ourselves and to man's best friend — researchers have found microplastics in human and canine testes. (Allen J.

For about one-half of couples with fertility problems, experts say low sperm count is the cause. But maybe something as simple as changing the kind of underwear a man wears can make a difference. The ...

Prefer Newsweek on Google to see more of our trusted coverage when you search. Open a medical textbook and you might learn that the inside of a man's testes are sterile environments, free of bacteria.

Get inspired by a weekly roundup on living well, made simple. Sign up for CNN’s Life, But Better newsletter for information and tools designed to improve your well-being. Human testicles contain ...

Researchers say they have found a way to pluck out a potent type of stem cell from the testes of adult mice and transform it into other kinds of tissue, including heart muscle and blood vessels. The ...

Researchers have located one more anatomical organ where microplastics — of all shapes and constituents — are found: human testes. And although they can’t say for sure, they suspect the presence of ...