CO-CREATE aims to reduce childhood obesity and its co-morbidities by working with adolescents, to create, inform and disseminate obesity-preventive evidence-based policies. The project applies a systems approach to provide a better understanding of how factors associated with obesity interact at various levels. The project focus on adolescence as the specific target group, a crucial age with increasing autonomy and the next generation of adults, parents and policymakers, and thus important agents for change. CO-CREATE involve and empower adolescents and youth organizations to foster a participatory process of identifying and formulating relevant policies, deliberating such options with other private and public actors, promoting relevant policy agenda and tools and strategies for implementation. CO-CREATE strengthen interdisciplinary research and have an inclusive multi-actor approach with involvement of academics, policy makers, civil society, relevant industry and market actors to ensure long-lasting impleme