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The hypothalamus is a region of the brain that regulates sleep cycles, body temperature, pituitary gland activity, and other autonomic nervous system functions.

When the hypothalamus malfunctions, thyroid problems, cluster headaches, and sleeping, eating, or reproductive problems may result.

Current as of: February 20, 2015

Author: Healthwise Staff

Medical Review: Anne C. Poinier, MD - Internal Medicine & Colin Chalk, MD, CM, FRCPC - Neurology