An overview of historical conceptions of human health -- A starting-point : two modern streams of philosophy of human health and disease -- The place of evolutionary theory in the philosophy of health and welfare -- Two classic theories of human welfare or happiness -- A background to the analysis of welfare or quality of life in the human sciences -- Some contemporary theories of human welfare or quality of life -- Ideas on animal health -- Some examples of ideas on animal welfare -- Biological theories of animal welfare -- Theories of welfare, ethics and values -- Theories of welfare in terms of subjective well-being -- On animal minds : a digression -- On quality of life in animals --

The idea of welfare as fulfilment of preferences -- Theories of welfare in terms of needs -- Theories of welfare in terms of natural behaviour -- On complex views of animal welfare -- On conflicts between individual and systemic welfare -- Welfare and time -- Summing up the analysis -- Towards a holistic theory of health in animal science -- Towards a happiness theory of welfare in the animal context.