Norbert Stefan is a trained endocrinologist and diabetologist. He is Holder of the W3 Heisenberg Professorship for Clinical and Experimental Diabetology at the University Hospital of Tübingen, Germany. He is also Head of the Department of Pathophysiology of Prediabetes at the Institute of Diabetes Research and Metabolic Diseases (IDM) of the Helmholtz Centre Munich.
Norbert Stefan focuses on the clinical-experimental approach to understand the pathogenesis of type 2 diabetes and its complications and to implement intervention strategies to prevent the disease. As a highlight of his research he precisely characterized metabolically healthy obesity and metabolically unhealthy normal weight in humans. A key finding of this research was the identification of the absence of fatty liver and mechanisms involved, more so than of visceral adiposity, as a determinant of metabolic health. Furthermore, he identified several hepatokines by which fatty liver impacts on the pathogenesis of type 2 diabetes and CVD. He is also conducting clinical trials to treat fatty liver and prevent type 2 diabetes. Norbert Stefan received several national and international scientific awards. He was a member of the executive committee of the German Diabetes Association and president of the 2015 Diabetes Congress of the German Diabetes Association. Norbert Stefan is presently Associate Editor of the scientific journal Diabetes and member of the International Advisory Board of The Lancet Diabetes & Endocrinology and received a Visiting Professorship from the Harvard Medical School.