Thomas A. Wadden, PhD, is the Albert J. Stunkard Professor of Psychology in Psychiatry at the Perelman School of Medicine, University of Pennsylvania. He also is Visiting Professor of Psychology at Haverford College. Dr. Wadden's more than 500 scientific publications have focused on the treatment of obesity by methods including diet, physical activity, behavior therapy, medication, and surgery. He also has investigated the health and psychosocial consequences of obesity and its associated eating disorders. Dr. Wadden is past president of the Obesity Society and has served on numerous panels for the National Institutes of Health. He is the recipient of numerous honors, including the TOPS Research Achievement Award from the Obesity Society, mentoring awards from the Perelman School of Medicine and the Obesity Society, and the Distinguished Alumni Award from the Department of Psychology at The University of North Carolina at Chapel Hill.

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George A. Bray, MD, is Boyd Professor Emeritus at the Pennington Biomedical Research Center, Louisiana State University; Professor of Medicine Emeritus at the Louisiana State University Medical Center; and Visiting Scientist at the Children’s Hospital of Oakland Research Institute. With over 2,000 scientific publications, Dr. Bray has conducted influential research on the causes of obesity, dietary approaches to the prevention of hypertension and diabetes, and dietary approaches to weight loss. He is a Master in the American College of Physicians, the American College of Endocrinology, and the American Board of Obesity Medicine. Other honors include the Lifetime Achievement Award from the North American Association for the Study of Obesity, induction into the Johns Hopkins Society of Scholars, and the Presidential Medal from the Obesity Society.