OverviewThe thyroid gland, a part of the endocrine (hormone) system, plays a major role in regulating the body's metabolism.
Update Date 5/28/2013
Updated by: Brent Wisse, MD, Associate Professor of Medicine, Division of Metabolism, Endocrinology & Nutrition, University of Washington School of Medicine. Also reviewed by David Zieve, MD, MHA, Bethanne Black, and the A.D.A.M. Editorial team.