Professor, Departments of Medicine and Medical Education Northwestern University Feinberg School of Medicine Director, Center of Lifestyle Medicine, Northwestern Medicine Chicago, IL Robert Kushner, MD is Professor of Medicine and Medical Education at Northwestern University Feinberg School of Medicine, and Director of the Center for Lifestyle Medicine in Chicago, IL, USA. After finishing a residency in Internal Medicine at Northwestern University, he went on to complete a postgraduate fellowship in Clinical Nutrition and earned a Masters degree in Clinical Nutrition and Nutritional Biology from the University of Chicago, IL, USA. Dr Kushner is past President of The Obesity Society, the American Society for Parenteral and Enteral Nutrition, and the American Board of Physician Nutrition Specialists (ABPNS), and a founder and first Chair of the American Board of Obesity Medicine (ABOM). Dr Kushner has authored over 250 original articles, reviews, books and book chapters covering medical nutrition, medical nutrition education and obesity, and is an internationally recognized expert on the care of patients with overweight or obesity issues. He is author/editor of multiple books; current books include Nutrition and Bariatric Surgery (CRC Press, 2015), Lifestyle Medicine: A Manual for Clinical Practice (Springer, 2016), Creating a Lifestyle Medicine Center (Springer, 2020), Six Factors to Fit – Weight Loss that Works for You! (Eat Right Press, 2020), and Primary Care: Evaluation and Management of Obesity (Wolters Kluwer, 2022).