Skip to Content
Home > Wellness > Health Library > 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
Hormones may also be taken as medicines, such as birth control
pills or estrogen therapy.
Current as of:
November 14, 2014
E. Gregory Thompson, MD - Internal Medicine & Alan C. Dalkin, MD - Endocrinology
To learn more about Healthwise, visit Healthwise.org.
© 1995-2015 Healthwise, Incorporated. Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated.
Our interactive Decision Points guide you through making key health decisions by combining medical information with your personal information.
You'll find Decision Points to help you answer questions about:
Get started learning more about your health!
Our Interactive Tools can help you make smart decisions for a healthier life. You'll find personal calculators and tools for health and fitness, lifestyle checkups, and pregnancy.
Feeling under the weather?
Use our interactive symptom checker to evaluate your symptoms and determine appropriate action or treatment.