The Obesity: Insights and Understanding" Third Edition is a succinct book that provides a plethora of multiple-choice questions. This manuscript aims to provide a tool for healthcare providers to learn about the challenging problem of obesity. Significant changes and new content is added based on current trends. The book's simple format makes the subject easy to understand. Short critique and citations follow most questions. Much work is being done to cover the most important and relevant topics. Health Care providers preparing for obesity exams will find it as a useful teaching aid. Many questions are based on clinical problems faced by clinicians treating obesity and related disorders in their day to day practices. We are hopeful that this book will bring new insights and help develop future physicians who are capable of addressing the obesity epidemic and the challenges it brings.