Despite the fact that the prevalence of obesity in early childhood has been stable and is no longer increasing in many developed and industrialized countries, the incidence of both obesity and full-blown metabolic syndrome in children and adolescents is still very high. Obesity is a major disease burden in all societies and needs to be prevented early in life. New approaches are eagerly sought and absolutely necessary. This book presents a comprehensive and state-of-the-art summary of current and new knowledge in this critical field. Crucial issues such as nutrition and genetics are described in detail. In addition, new ideas such as e-health and the consequences of urban living conditions are explored. Last but not least, modern treatment concepts and prevention even at an early age are competently discussed. Offering a valuable update on new developments in obesity research and the treatment in children and adolescents, this book is essential reading for all pediatricians and health-care professionals who look after young patients on a regular basis.