### Jonathan Q. Purnell, MD: Expert in Diabetes and Obesity Jonathan Q. Purnell, MD, is a well-respected medical professional specializing in endocrinology, diabetes, and clinical nutrition. He completed his medical education at Oregon Health & Science University (OHSU) and further honed his skills with an internal medicine residency at the University of Vermont and an endocrine fellowship at the University of Washington. Dr. Purnell is currently an associate professor at OHSU, where he is part of the division of endocrinology, diabetes, and clinical nutrition. He is also a faculty member at the Center for the Study of Weight Regulation, a research institute at OHSU dedicated to understanding weight-related disorders such as obesity and cachexia. His clinical research focuses on several key areas: the causes and consequences of central obesity, the impact of intensive diabetes therapy on weight gain in patients with type-1 and type-2 diabetes, and how changes in diet composition (fat, carbohydrate, and protein) affect appetite and body weight in humans. Additionally, Dr. Purnell directs an obesity/metabolism clinic, where he applies his extensive research to help patients manage their weight and metabolic health.###