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Hormone

A hormone, such as insulin or estrogen, is a substance released by an organ or tissue that controls the activity of organs or cells in another part of the body. The organs or glands that release hormones are part of the endocrine system.

Hormones may also be taken as medicines, such as birth control pills or estrogen replacement therapy.

ByHealthwise Staff
Primary Medical ReviewerSarah Anne Marshall, MD - Family Medicine
Primary Medical ReviewerAdam Husney, MD - Family Medicine
Specialist Medical ReviewerKirtly Jones, MD - Obstetrics and Gynecology
Last RevisedMay 6, 2010

WebMD Medical Reference from Healthwise

Last Updated: May 06, 2010
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