Abstract

Contemporary philosophy of health and disease has been quite focused on the problem of determining the nature of the concepts of health and disease from a scientific point of view. Some theorists claim and argue that these concepts are value-free and descriptive in the same sense as the concepts of atoms, metal, and rain are value-free and descriptive. According to this descriptive or naturalist line of thought, the notions of health and disease are furthermore related to the idea of a normal or natural function. A bodily organ is healthy insofar as it functions normally, and it is diseased when it does not fulfill its functions. Other philosophers claim that the concept of health, together with other medical concepts, is essentially value-laden. To establish that a person is healthy does not just entail some objective inspection and measurement. It presupposes also an evaluation of the general state of the person. My purpose in this article is to scrutinize the relation between the notion of a natural function, on the one hand, and the concepts of health and disease on the other. In characterizing the notion of a normal function I will follow the classic analysis put forward by American philosopher Christopher Boorse. I will criticize Boorse’s proposal mainly by using arguments from the analysis of ordinary lay and medical language. I ask questions such as: what do we normally mean when we ascribe health or disease to a person? In the end I will recommend an analysis of these and related medical notions, which is unrelated to the notion of a natural function as normally interpreted.