Effective responses operate at multiple levels. At the policy level, measures that change the food environment have proven influence. These include taxes on sugar-sweetened beverages, restrictions on junk-food advertising—especially to children—clear front-of-package labeling, and reformulation incentives to reduce sugar, salt, and unhealthy fats in processed foods. Zoning and urban-planning policies can increase access to supermarkets, encourage active transport through safe walking and cycling infrastructure, and preserve green space. Schools and workplaces are critical sites for healthy eating and activity programs that reach broad populations.
