This volume consists of a broad selection of studies on the applied economics of weight and obesity. The chapters cover a wide spectrum of topics, and employ a variety of applied techniques across a range of countries. Some of the issues explored include: the relationship between childhood obesity and food insecurity; adolescent weight gain and social networks; obesity and happiness; the relationship between fast food and obesity; tobacco control; race and gender differences; and consumer health. This book is a compilation of articles originally published in the journals Applied Economics and Applied Economics Letters.