There is a need for a text that explains syndemics-the systems approach methodology for understanding and addressing complex public health problems. The book explains the use of systems approaches for brining together the largest possible picture for understanding health issues afflicting those most vulnerable in our society. The author explains new ways for understanding the health of the poor by looking at the whole and to considering the interconnections among the parts. This text provides an ideal text for courses in epidemiology, medical anthropology, community health nursing, and more.