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.

Most hormones are regulated by negative feedback mechanisms as opposed to positive feedback mechanisms. For example, in the negative feedback system that regulates glucagon and insulin secretion, a ...

Hormones are substances made in the body that control the function of cells and organs, according to the American College of Obstetrics and Gynecology (ACOG). An example of this is estrogen ...

Hopes for the use of oxytocin as a therapy for mood and attachment disorders have been confounded by the wide-ranging effects ...

It can also happen when your body can't respond to the hormones well enough. For example, some people with type 2 diabetes make enough insulin, but their bodies don't use it the right way.

For example, a child who has a profound deficiency in growth hormone (especially if they are a cancer survivor with damage to the pituitary gland) may need to continue taking HGH as an adult ...

For example, the pituitary gland releases more thyroid-stimulating hormone (TSH) into the blood if it senses that levels are too low—and if those levels increase, it releases less TSH.

Stress hormones are chemical messengers that play a role in the body’s physiological and behavioral responses to stress. Examples include catecholamines and cortisol. These hormones help ...

The best type of hormone replacement therapy (HRT) depends on your health, your symptoms, personal preference, and what you need to get out of treatment. For example, if you still have your uterus ...