I. Prevalence, Consequences, and Etiology of Obesity 1. Epidemiology and Health and Economic Consequences of Obesity, Graham A. Colditz & Hank Dart 2. Gut-to-Brain Mechanisms of Body Weight Regulation, Matthew R. Hayes 3. Energy Expenditure and Obesity, Kara L. Marlatt & Eric Ravussin 4. Genetics of Obesity, I. Sadaf Farooqi 5. Human Energy Homeostasis and the Gut Microbiome, Michael Rosenbaum & Rudolph L. Leibel II. Behavioral, Environmental, and Psychosocial Contributors to Obesity 6. The Role of Portion Size, Energy Density, and Variety in Obesity and Weight Management, Barbara J. Rolls 7. Physical Activity and the Development of Obesity, Claude Bouchard, Peter T. Katzmarzyk, & Robert Ross 8. Sleep and Obesity, Andrea M. Spaeth & David F. Dinges 9. Social, Economic, and Physical Environmental Contributors to Obesity among Adults, Joreintje Dingena Mackenbach, Jeroen Lakerveld, & Johannes Brug 10. Psychosocial Contributors to and Consequences of Obesity, Rebecca M. Puhl & Rebecca L. Pearl 11. Obesity, Eating Disorders, and Addiction, Courtney McCuen-Wurst & Kelly C. Allison III. Health Consequences of Weight Reduction 12. The Impact of Intentional Weight Loss on Major Morbidity and Mortality, Edward W. Gregg & Marcela Rodriguez Flores 13. Weight Loss and Changes in Psychosocial Status and Cognitive Function, Candice A. Myers & Corby K. Martin 14. Effects of Lifestyle Interventions on Health-Related Quality of Life and Physical Functioning, W. Jack Rejeski & Donald A. Williamson IV. Assessment of Patients with Obesity 15. Medical Evaluation of Patients with Obesity, Rekha B. Kumar & Louis J. Aronne 16. Behavioral Assessment of Patients with Obesity, Jena A. Shaw Tronieri & Thomas A. Wadden V. Treatment of Obesity in Adults 17. An Overview of the Treatment of Obesity in Adults, Thomas A. Wadden, Zayna M. Bakizada, Steven Z. Wadden, & Naji Alamuddin 18. Dietary Treatment of Overweight and Obesity, Arne S. Astrup 19. Physical Activity and Weight Management, John M. Jakicic, Renee J. Rogers, Sally A. Sherman, & Sara J. Kovacs 20. Behavioral Treatment of Obesity, Stephanie Gomez-Rubalcava, Kaitlin Stabbert, & Suzanne Phelan 21. The Role of Medications in Weight Management, George A. Bray & Donna H. Ryan 22. Surgical Treatment of Obesity, Zubaidah Nor Hanipah, Ali Aminian, & Philip R. Schauer 23. Maintenance of Weight Lost in Behavioral Treatment of Obesity, Michael G. Perri & Aviva H. Ariel-Donges VI. Additional Approaches to and Resources for the Treatment of Obesity 24. The Emerging Field of Obesity Medicine, Robert F. Kushner & Scott Kahan 25. Coverage of Obesity Treatment: Costs and Benefits, Morgan Downey & Theodore K. Kyle 26. Obesity Treatment Perspectives in U.S. Racial/Ethnic Minority Populations, Shiriki K. Kumanyika 27. Treatment of Obesity in Primary Care, Adam G. Tsai & Thomas A. Wadden 28. Remotely Delivered Interventions for Obesity, Deborah F. Tate, Brooke T. Nezami, & Carmina G. Valle 29. Commercial Weight-Loss Programs, Kimberly A. Gudzune & Jeanne M. Clark 30. Treatment of Obesity in Community Setting, Delia Smith West, Rebecca A. Krukowski, & Chelsea A. Larsen 31. Alternative Behavioral Weight Loss Approaches: Acceptance and Commitment Therapy and Motivational Interviewing, Meghan L. Butryn, Leah M. Schumacher, & Evan M. Forman 32. Behavioral Economics and Weight Management, Mitesh S. Patel & Kevin G. M. Volpp 33. Nonsurgical Interventional Modalities for the Treatment of Obesity, Jacqueline M. Soegaard Ballester, Casey H. Halpern, Noel N. Williams, & Kristoffel R. Dumon 34. Treatment of Eating Disorders in Persons with Obesity, Carlos M. Grilo 35. Obesity and Body Image Dissatisfaction, David B. Sarwer, Colleen M. Tewksbury, & Heather M. Polonsky 36. Obesity, Weight Management, and Self-Esteem, Carol Johnson VII. Childhood Obesity and Obesity Prevention 37. The Development of Childhood Obesity, Tanja V. E. Kral & Robert I. Berkowitz 38. Prevention of Obesity in Youth: Findings from Controlled Trials, Hannah G. Lawman, Alexis C. Wojtanowski, & Gary D. Foster 39. Behavioral Treatment of Obesity in Youth, Katherine N. Balantekin, Denise E. Wilfley, & Leonard H. Epstein 40. Pharmacological Treatment of Pediatric Obesity, Robert I. Berkowitz & Ariana M. Chao 41. Bariatric Surgery in Adolescents with Severe Obesity, Andrew J. Beamish & Thomas H. Inge 42. Using Public Policy to Address Obesity: Past, Present, and Future, Marlene B. Schwartz & Kelly D. Brownell Author Index Subject Index