OverviewInsulin is a hormone secreted by the pancreas in response to increased glucose levels in the blood.
Update Date 5/31/2013
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.