Excessive use of alcohol has a direct toxic effect on the heart muscle cells. The heart muscle becomes weakened and cannot pump blood efficiently. The lack of blood flow affects all parts of the body, resulting in damage to multiple tissues and organ systems. Alcohol may also directly damage the liver.
Review Date 1/27/2020
Updated by: Michael A. Chen, MD, PhD, Associate Professor of Medicine, Division of Cardiology, Harborview Medical Center, University of Washington Medical School, Seattle, WA. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.