Ever wonder why you feel like crying over a pet food commercial one day but can watch a tearjerker movie completely unfazed the next? Or why your weight seems to fluctuate despite eating the same ...

Hormones are the body’s chemical messengers. They act on various tissues and organs in the body to change their behavior. For example, the hormone prolactin stimulates the production of breastmilk.

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 hypothalamus–pituitary–target gland axis has been recognized as a fundamental functional framework of the mammalian endocrine system. The anterior pituitary gland synthesizes and secretes multiple ...

Ghrelin is a hormone your stomach makes that signals your body when you're hungry. You might think of it as an "on switch" for appetite. Your small intestine, pancreas, and brain also release small ...

It is tempting to understand muscle's role in the body as a simple mechanical motor. But the truth is much more complex: our muscles function as an endocrine organ that can influence virtually every ...

Hormone replacement therapy (HRT) is a medical treatment that aims to alleviate the symptoms of menopause by replenishing hormones like estrogen and progesterone, which naturally decrease as women age ...

Isabel Casimiro, MD, PhD, is an endocrinologist at the University of Chicago in Illinois. As a physician-scientist in molecular biology, she uses her research on diabetes, lipid disorders, ...

Cortisol, often dubbed the 'stress hormone,' plays a vital role in maintaining the body's equilibrium. Its influence extends ...

Based in Tampa, Florida, Virginia Pelley is a former women's magazine editor who has written health and fitness content for Men's Journal, Cosmopolitan magazine, the Chicago Tribune, ...