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Vitamin B12 benefits
Overview
Vitamin B12 is important for metabolism. Metabolism within the body includes the processes of energy generation and use, including nutrition, digestion, absorption, elimination, respiration, circulation, and temperature regulation.
Review Date 1/10/2026
Updated by: Frank D. Brodkey, MD, FCCM, Associate Professor, Section of Pulmonary and Critical Care Medicine, University of Wisconsin School of Medicine and Public Health, Madison, WI. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.
