Professor Alpers was the chief of the GI Division at Washington University School of Medicine from 1969-1996. Since 1998 he has served as the co-director of the Centre for Human Nutrition, and director of the pilot and feasibility studies of the Washington University CNRU. In addition, since 1998 he has served part time as a senior consultant to R&D (gastrointestinal, pain, and anti-inflammatory drug development) for GlaxoSmithKline.
Dr Alpers served the American Gastroenterological Association as chair of the Research Committee, director of the Undergraduate Teaching Project, and as President (1990-91). In 1997 he was awarded the Friedenwald medal by the AGA for a lifetime of contributions to the field of gastroenterology. He has served as editor for the Am J Physiology Gastrointestinal and Liver Physiol (1991-1997), and for the Small Intestine and Nutrition sections of Current Opinion in Gastroenterology (1996-present). He was associate editor of the J Clinical Investigation and of Annual Reviews of Nutrition, and is currently associate editor of the Textbook of Gastroenterology (Lippincott Williams & Wilkins, T Yamada, editor in chief), now in its fourth edition. He is senior author of the Manual of Nutritional Therapeutics (Lippincott Williams & Wilkins, 4th edition).