The importance of public policy as a determinant of health is routinely acknowledged, but there remains a continuing absence of mainstream debate about the ways in which the politics, power and ideology, which underpin public policy influence people's health. This paper explores the possible reasons behind the absence of a politics of health and demonstrates how explicit acknowledgement of the political nature of health will lead to more effective health promotion strategy and policy, and to more realistic and evidence-based public health and health promotion practice.