In the first section, several contributions identify the kind of 'naturalism' the biostatistical theory belongs to and offer further criticisms or possible modifications, such as the concept of function that is required by this theory, and whether a comparativist approach to health is more relevant than a non-comparativist one. The second section explores natural or biological 'normativity' and some possible accounts of health that could be based on this concept. The third and final section focuses on the implications of naturalism in healthcare. 'Goals of Medicine' is the first paper in which Christopher Boorse ventured toward analysing the implication of his biostatistical theory of health on the practice of medicine, the difficult issue of the goals of medicine and the boundary between treating and enhancing. Other papers in this section critically evaluate Boorse's account and analyse the importance of a positive concept of health.