There is an urgent need to better understand the causes and consequences of obesity, and to learn what works to prevent or reduce obesity. The purpose of this volume is to accurately and conveniently summarize the findings and insights of obesity-related research from the full range of social sciences, including anthropology, economics, government, psychology, and sociology. The first section of the book explains how each social science discipline models human behavior (in particular, diet and physical activity), and summarizes the major strains of obesity research in that discipline. The second section provides important information for researchers, including a guide to publicly available social science data on obesity and an overview of the challenges to causal inference in obesity research. The third part of the book synthesizes social science research on specific causes and correlates of obesity, such as food advertising, food prices, and peers. The fourth section summarizes social science research on the consequences of obesity, such as lower wages, job absenteeism, and discrimination. The fifth and final section reviews the social science literature on obesity treatment and prevention, such as food taxes, school-based interventions, and medical treatments such as anti-obesity drugs and bariatric surgery. This volume is designed to meet the growing need of researchers for accurate and well-written summaries of the large amount of recent studies on this topic. This handbook will be of great use for researchers in every social science discipline, both bringing them up to date on the relevant research in their own discipline and allowing them to quickly and easily understand the cutting-edge research being produced in other disciplines. It is a volume that every obesity researcher will want to have on his or her shelf. These research summaries are valuable for researchers, public health officials, policymakers, nutritionists, and medical practitioners.