What is public health? public goods, publicized goods, and the conversion problem

Public health programs began as an attempt to fight infectious diseases that are difficult to address without collective action. But the concept and practice of public health has ballooned to encompass an expanding list of controversial public policy goals ranging from reducing obesity to raising self-esteem. As the list of controversial goals expands, support for "public health" measures contracts. I'll briefly defend the view that we should define public health as the provision of health-related public goods. I'll then show that being a health-related public good is not a sufficient condition for counting as a public health goal, since virtually any private good can be converted into a public good by government fiat. This is the conversion problem, which challenges the way we ordinarily think about public goods and public health.