California Gov. Gavin Newsom has signed a law phasing out certain ultraprocessed foods from school meals. The state will have to adopt rules by 2028 defining “ultraprocessed foods of concern” under the law. The law directs schools to start phasing out the foods by 2029, with a full ban taking effect in 2035. The legislation is part of a growing push across states aimed at improving nutrition at schools. But some critics say it goes too far. States have also sought to ban or require the labeling of foods that contain artificial dyes and controversial additives.