Abstract
Health and illness are key concepts of medicine but they also have essential significance for each and every one of our lives. For this reason, social value systems are inevitably integrated into medicine through the concept of health and illness. In turn, medical knowledge and medico-scientific notions are perpetually incorporated into societal perceptions of health and illness. Generally, such integration usually occurs via an extended concept of health and illness, which is to be discussed in the following. To a certain extent, medical and societal notions of health are mutually co-determined. The underlying dynamics deserve a closer look because if health and illness are societal and medical concepts alike this fundamentally impacts on the epistemological and the practical dimension of diagnosis and prognosis as discussed in this volume of Medicine Studies