A feel-good hormone called oxytocin is best known for its roles in triggering romantic feelings and boosting mother-child ...

Testosterone, the primary sex hormone in men, plays a vital role in male reproductive development and function, as well as other functions like bone density and muscle mass. Testosterone levels ...

Ghrelin, called the hunger hormone, tells your brain it's time to eat when your stomach is empty. Ghrelin can make it hard to lose weight because it may increase appetite and decrease metabolism when ...

Growth hormone, produced by the pituitary gland, plays a critical role in cell regeneration, growth, and maintaining healthy body tissue, including the brain and vital organs. While synthetic human ...

The science explains why you feel on edge, groggy, tired, irritable, distracted and drained ...