How Can Local Food Environment Policies Reduce Socioeconomic Inequalities in Diet?

This commentary discusses the role of local municipal policies in addressing socioeconomic inequalities in diet and preventing diet-related noncommunicable diseases (NCDs). While national legal and fiscal instruments are essential, local governments possess unique tools, such as spatial planning and public procurement, to improve daily food environments. However, published examples do not establish the comparative effectiveness of municipal-level interventions or their effects on dietary inequalities. Improving physical access or relying on informational tools, like menu labelling, should not be assumed sufficient to reduce dietary inequalities. Direct financial incentives are promising, but the cited observational evidence does not establish causal effectiveness. Interventions combining availability, affordability and demand may address multiple barriers, without necessarily outperforming single structural measures. To reduce dietary disparities, local policies should form part of a coherent multilevel strategy, address economic as well as physical access, and be durably funded, coupled with rigorous, equity-focused evaluation of implementation, dietary outcomes and, where feasible, longer-term health outcomes.