Estrogen is the Meryl Streep of hormones, its versatility renowned among scientists. Besides playing a key role in sexual and reproductive health, it strengthens bones, keeps skin supple, regulates ...

Millions of women go through pregnancy every year, yet science has only just begun to look at what it does to the brain—the ...

The stress hormone cortisol disrupts the brain's navigational system. It impairs the function of the grid cells that play a ...

Hormone levels fluctuate like the tides, ebbing and flowing according to carefully orchestrated cycles. These hormones not only influence the body, but can cross into the brain and shape the behavior ...

The stress hormone cortisol disrupts the brain's grid cells, blurring the internal GPS system and impairing navigation.

Sunlight activates hormones essential for mood, sleep and reproductive health — that’s why it’s important to go outside when ...

Researchers found a rare, strictly binary brain feature in mice that is permanently active in females but completely dormant ...

"Baby brain" is a concept that's been around for a while, but there's been little research on why it exists. Now, scientists might know what purpose it serves.

Scientists just discovered a hormone that may solve a long-standing biological mystery. It's difficult to prove you've identified a new hormone — a chemical signal that directs behavior in distant ...

Forbes contributors publish independent expert analyses and insights. Questions about hunger and fullness come up constantly in my clinic. Many patients try to manage appetite through willpower alone, ...