Gastric Bypass Illustration (IMAGE) Washington University School of Medicine Caption A small study at Washington University School of Medicine in St. Louis shows that gastric bypass surgery changes the way the body metabolizes alcohol. Credit Center for Human Nutrition Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.