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 ...

There is better clarity on the benefits and risks of estrogen and progesterone for women of a certain age. Women are also demanding more attention to their needs. All of this helps to explain the ...

Here’s when and why experts think testosterone should be prescribed to middle-aged women, and how it affects their lives. By Susan Dominus Testosterone use has recently exploded among middle-aged ...

This article was reviewed by Felix Gussone, MD. Testosterone does more than drive puberty. It influences drive, mood, motivation, and aspects of overall energy. Produced mainly in the testes, this ...

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 ...

Increased physical stamina. “Facility of intellectual labour.” A longer jet of urine. These were some of the effects that Charles-Édouard Brown-Séquard, a French physiologist, reported to a Société de ...

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 ...

Daniel Kelly does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond their ...

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 ...