Hormones are molecules that are produced by the endocrine glands. These glands secrete hormones into the bloodstream, which carries the hormones to their target cells.

Hormones play a vital role in regulating many of the body's processes, including metabolism, growth, and reproduction.

The pituitary gland, located at the base of the brain, is the body's main endocrine gland. It produces several hormones that regulate the function of other endocrine glands, as well as growth, blood pressure, and some aspects of pregnancy and childbirth.

The thyroid gland, located in the neck, produces thyroid hormone, which regulates the body's metabolism. The adrenal glands, located atop the kidneys, produce hormones that regulate the body's response to stress.

The ovaries and testes, the female and male reproductive organs, respectively, produce hormones that regulate the body's reproductive function.

All of these hormones are vital to the proper functioning of the body. Without them, many of the body's processes would not be able to take place.

While hormones are generally necessary for good health, too much or too little of a particular hormone can lead to health problems. For example, too much thyroid hormone can cause an overactive metabolism, while too little can lead to a sluggish metabolism.

The imbalance of hormones is also thought to play a role in some mental health conditions, such as depression and anxiety. Hormone replacement therapy is sometimes used to treat hormone-related health problems.

Books discussing Hormones

All Hormones Books

Experts discussing Hormones