Professor Volkan Demirhan Yumuk graduated from Hacettepe University Medical School in Ankara and served as a general practitioner in a central anatolian village for two years. He completed his internal medicine residency in a teaching state hospital in Istanbul in 1992 and started to work in the Division of Diabetes and Metabolism at Istanbul University Cerrahpasa Medical Faculty. In 1994 he went through a six month research fellowship program in the Division of Endocrinology and Metabolism at University of Michigan School of Medicine studying pancreatic islet isolation techniques in rats. In 1997 he completed the clinical endocrinology fellowship program in the Division of Endocrinology and Metabolism at University of Alabama School of Medicine. He became an associate professor in 1998 and a full professor of medicine in 2006. He is currently a faculty member in the Division of Endocrinology, Metabolism and Diabetes, Istanbul University Cerrahpasa Medical Faculty. Volkan Yumuk’s research area is obesity and his major clinical interest is prevention and management of obesity and type 2 diabetes. He has published many papers in national and international journals, and authored chapters in books in the field of endocrinology. He is a founding member of the Turkish Association for the Study of Obesity and the Balkan Obesity Network; he is a member of the executive committee for the European Association for the Study of Obesity (EASO) and is currently chairing the Obesity Management Task Force of EASO. He has chaired the 18th European Congress on Obesity in Istanbul in 2011. He has become a fellow of American College of Physicians in 2001 and a fellow of American College of Endocrinology in 2006. He is been elected as a SCOPE (Specialist Certification of Obesity Professional Education) European Fellow in 2007. He is a reviewer for the Obesity Reviews, Obesity Facts, Hormones and Turkish Archives of Cardiology.