This paper introduces the line-drawing challenge for ability-based accounts of health. What degree of which abilities is required for complete health? I argue that the answers provided by existing theories are flawed and propose the Blueprint View. On this view, an organism is completely healthy if and only if it has the abilities it would have in its design state, where design is determined by the etiology of its traits. This view provides an objective, naturalistic distinction between health and non-health. It strikes a balance between pure physiology and well-being, and distinguishes treatment from enhancement, as well as real pathology from pathologized variation.
Fabian Hundertmark (Tue,) studied this question.