Technically, yes, testosterone is a steroid hormone. But it’s not the kind of steroid that gets high-performing athletes stripped of their titles. Rather, testosterone replacement therapy (TRT) is a ...

Dr. Jamin Brahmbhatt is a urologist and robotic surgeon with Orlando Health and an assistant professor at the University of Central Florida’s College of Medicine. You’re feeling unusually tired and ...

Testosterone is being hailed as the secret to better energy, mood, and sex drive. Here’s what experts say about when it actually does help—and when it doesn’t. Women naturally produce testosterone, a ...

Dr. Sapolsky is a neuroscientist and primatologist. I was observing a 9-year-old male baboon in the Serengeti of East Africa one day in 1983. Baboon troops are very hierarchical, and this baboon was a ...

In men, marked hypogonadism due to pituitary or testicular disease generally has readily recognizable clinical manifestations, such as decreases in libido and sexual activity, loss of secondary sex ...