International audienceIn a series of papers published in the 1970s, Christopher Boorse proposed a naturalist theory of health, mainly based on a value-free concept of ‘biological function’, a concept of ‘reference class’ and the notion of ‘statistical normality’. His theory has profoundly shaped the philosophical debates on the concepts of health and disease. It could even be said that the numerous criticisms of his 'biostatistical theory' are at the centre of what is usually referred to as the debate between ‘normativists’ and ‘naturalists’. Today, the predominant naturalist theory of health is still Boorse’s biostatistical theory. This volume offers the first comprehensive review and critical assessment of the nature and status of natural...