Integrating economics into the rationale for multisectoral action on obesity.

Obesity is a compelling example of the challenges of championing and mobilizing a response that involves the whole of government and all of society. This paper discusses the need for economic rationales to strengthen the case for government intervention on obesity, with a view to better engaging the expertise and resources of nonhealth sectors. The paper also briefly reviews economic theory and evidence that could support an integrated multisectoral rationale for action, noting opportunities to expand the integration of economic evidence in the Americas.