Politics of public health

The aim of public health is to improve and protect individuals and their communities, as well as promote evidence-based policy to drive decision-making across the larger health system. Researchers in academic institutions, government agencies, and the private sector provide the science to help policymakers make evidence-based health policy decisions, such as interventions to increase smoking cessation, or policies to improve access to preventive care services. In an ideal world, science (or evidence) drives policy, with politics playing a minimal or enabling role. However, this formula recognizes that public health policy is not only decided based on science (or evidence), but science itself is increasingly vulnerable to the political process, and to attacks by a wide array of players (e.g. politicians, industry leaders, and interest groups) that have vested interests to undermine scientific evidence in order to thwart the actions that would credibly follow that knowledge. Put differently, politics are key—and can be systematically analysed—in advancing or thwarting evidence-based policy.