Despite children making up around a quarter of the population, the first edition of this book was the first to focus on a public health approach to the health and sickness of children and young people. It combined clinical and academic perspectives to explore the current state of health of our children, the historical roots of the speciality, and the relationship between early infant and child health on later adult health. Child public health is a rapidly developing field, and is increasingly recognised throughout the world as a major area of focus for population health. Targeting the health of children now is essential if we are to achieve a healthy population as adults. For the second edition the text has been revised and updated with new material on health for all children, global warming, child participation, systems theory, refugees, commissioning, and sustainable development.