Starting with a working definition, this comprehensive work defines the attributes of the population health model. It clarifies what population health is and is not. It discusses health disparities and the social determinants of health and illness and provides new ways of moving forward towards a more sustainable healthcare model in a changing society, thereby pointing out the importance of multi-sector collaboration for collective impact for community health improvement. The book takes this further by providing sources of data to support the population health model. As such, this book provides a must-read for students and anyone working, teaching or consulting in population healthcare.