This article was reviewed by Felix Gussone, MD. What Is Testosterone? As the primary male hormone, or androgen, testosterone ...

Testosterone is the primary androgen — or male hormone — in your body. Low testosterone affects up to 39 percent ...

Researchers have discovered how an ion channel in the brain's neurons has a kind of 'molecular memory', which contributes to the formation and preservation of lifelong memories. The researchers have ...

Your body moves through distinct stages that serve different restorative functions. Deep, slow-wave sleep is the primary stage during which the body prioritizes tissue repair, muscle recovery and ...

It's official: 'cortisol belly' is the new 'cortisol face'. The phrase – used to describe water and fat that accumulates around the mid-section from stress – has gone viral on TikTok, but experts warn ...