Professor Marx is a Professor of Medicine and Cardiology and Head of the Department of Internal Medicine I, University Hospital Aachen, Germany. He received his medical training at the Universities of Mainz, Genf (Switzerland) and Düsseldorf, before obtaining his MD in 1994.
After a successful post-doctoral fellowship at Brigham and Women's Hospital, Harvard Medical School, Professor Marx later became a board-certified internist, then cardiologist, before specialising in intensive care medicine in internal medicine at the University of Ulm, Baden-Württemberg, Germany.
Professor Marx is a member of several organisations within the field of cardiology and diabetes, including the European Society of Cardiology, American Heart Association (AHA), German Diabetes Association and the European Association for the Study of Diabetes. In addition to reviewing submitted manuscript to numerous journals, including Circulation, Diabetologia, Diabetes, Diabetes Care, the Journal of Immunology and The Lancet, he is currently the Associate Editor for Diabetes and Vascular Disease Research. Professor Marx has served as President of the German Atherosclerosis Society (DGAF) from 2012 to 2015. He has also been a board member of the German Society of Cardiology (DGK) from 2017 to 2019.