Do hormone treatments, like testosterone blockers, take away a trans woman’s physical advantage over a female in athletic competition? “Males have natural and categorical advantages over females in ...

What used to be a niche treatment for men with legitimate medical conditions has morphed into "youth and vigor" as a ...

If you’re taking finasteride — or the brand name versions Propecia or Proscar — you’re probably checking your hairline for changes. But there might be something else you’re worried about changing: ...

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 ...

Q. I would like to know more about the use of testosterone replacement in men. My understanding is that a recent large-scale study showed that men using testosterone replacement therapy did not have ...

The Biden administration has been promoting puberty blocker and hormone therapy treatment drugs for transgender children even as it spent roughly $17 million on studies to analyze the dangers and ...

Genetics play a role in low testosterone for some men, but underlying causes vary widely. Many genes influence testosterone ...