Playing the policy game: a review of the barriers to and enablers of nutrition policy change.

The frustration around lack of public policy change in nutrition frequently stems from a belief that policy making is a rational process in which evidence is used to assess the relative costs and benefits of options. The findings from the present review confirm that evidence is only one component of influencing policy change. For policy change to occur there needs to be the political will, and often the public will, for the proposed policy problem and solution. The review presents a suite of enablers which can assist health professionals to influence political and public will in future advocacy efforts.