This paper analyses the historical origins of the concepts of welfare
as a positive right and of quality of life. The latter has historical
antecedents but has become important in the latter half of the twentie
th century, owing to the conflict between consumer demands for medicin
e and constraints upon spending. It is argued that, beyond the immedia
te economic and utilitarian contexts, the concept of quality of life h
as the potential to promote individual liberty and a more subjectively
-based approach to medicine.