Obesity-represented by a BMI over 30-may be easy to define, but its causes and consequences and how individuals and agencies should address it are not as clear. Is obesity simply the result of eating more calories than one burns, or are other factors involved? Can an individual be obese and healthy? How does obesity affect psychological and social health? Are public health campaigns targeted at reducing obesity helping or hurting? This book answers these and other questions following a reader-friendly question-and-answer format that anticipates readers' needs and concerns. Prevalent myths and misconceptions are identified and dispelled, and a collection of case studies illustrates key concepts and issues through relatable stories and insightful recommendations. It also includes a section on health literacy, equipping teens and young adults with practical tools and strategies for finding, evaluating, and using credible sources of health information both on and off the internet.