ACTH

ACTH (adrenocorticotropic hormone) is a hormone produced by the pituitary gland, located below the brain. ACTH activates glands on the kidneys (adrenal glands) to make cortisol, a substance that helps the body deal with stress.

When cortisol levels in the blood rise, the ACTH levels in a healthy person normally fall in response. When cortisol levels decrease, ACTH levels normally rise.

Last Updated: June 26, 2008

Author: Bets Davis, MFA

Medical Review: Caroline S. Rhoads, MD - Internal Medicine & David C.W. Lau, MD, PhD, FRCPC - Endocrinology & Metabolism

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