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 ...

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 ...

Hormones control all bodily processes in humans because they affect everything from metabolism and mood through reproduction and sleep. However, one of the most important yet often misunderstood ...

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 ...

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

Before talking about happiness hormones, it is important to understand what hormones are and how they are produced. The endocrine system works together with the nervous system to influence many ...