Metabolism refers to all the physical and chemical processes in the body that convert or use energy, such as:
Controlling body temperature
Digesting food and nutrients
Eliminating waste through urine and feces
Functioning of the brain and nerves
Tortora GJ, Derrickson BH. Metabolism. In: Tortora GJ, Derrickson BH. Principles of Anatomy and Physiology. 14th ed. Hoboken, NJ: John H Wiley and Sons; 2013:chap 25.
Laura J. Martin, MD, MPH, ABIM Board Certified in Internal Medicine and Hospice and Palliative Medicine, Atlanta, GA. Also reviewed by David Zieve, MD, MHA, Isla Ogilvie, PhD, and the A.D.A.M. Editorial team.