Many communities across America are changing public policy, community environments, and industry practices to better support healthy eating, physical activity, and healthier choices for kids and families so that all children are able to grow up at a healthy weight, and have a healthy start in life. Yet, with more than 23.5 million U.S. children and adolescents – nearly one in three young people – already overweight or obese, childhood obesity remains one of the most urgent health challenges of our time. Research in this area focuses on overweight and obesity trends, the impact of policies, systems, and environments on weight status, and interventions that promote a healthy weight.