The overarching aim of the foregoing three chapters is to provide the background from which Boorse’s own concept of health emerges. Chapter 2 presented specific naturalistic concepts of health and Boorse’s arguments against them. Chapter 3 offered a critical review of Boorse’s dismissal of the idea that the concept of health is normative. Chapter 4 furnished Boorse’s contextualist concept of function, which emerged as a response to Wright’s etiological concept of function. With these three preliminary chapters in place, it is now possible to turn to Boorse’s own concept of health.