A new study shows that Toxoplasma gondii—a brain parasite often transmitted to humans by cats—triggers various changes…

It shouldn’t come as a surprise that sitting for long periods of time is bad for us. But new research suggests it’s not…

Something weird is going on with human sperm production. For decades, scientists have warned that sperm counts are…

Doctors have this nasty habit of asking a lot of questions, many of which make us uncomfortable or self-conscious. So…

The US Food and Drug Administration is proposing that minors be restricted from using tanning beds, and that adults…