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.

The hypothalamus (pronounced hai-puh-tha-luh-muhs) is a gland in your brain that controls your hormone (endocrine) system. It's sort of like your body's thermostat; it receives signals from other ...

Infertility or reduced fertility is a common problem in the United States. According to the Centers for Disease Control and Prevention, nearly 1 out of 5 women are unable to get pregnant after a year ...

A growing understanding of how “reproductive” hormones sculpt the brain could transform the management of neurological conditions. Credit...Yuko Shimizu Supported by By Rachel E. Gross Estrogen is the ...

Dopamine is a neurotransmitter and hormone that works with your brain’s reward system and sends messages between your brain and body, Cleveland Clinic explains. Dopamine gives us a sense of pleasure ...

Musth, a time of heightened testosterone levels and aggression in male elephants related to reproduction, has now been identified in woolly mammoth tusks. Remarkably, this is the first time hormones ...