BACKGROUNDThe prevalence of overweight and obesity in Europe is high and contribute to mortality and the burden of many chronic diseases, especially within groups of lower social-economic status. Obesity is largely determined by modifiable lifestyle dependent risk factors such as reduced physical activity, sedentary behaviour and an unhealthy diet. There is growing evidence that influences on individuals and their lifestyle should not only be addressed in single-level interventions that focus on a distinct individual, social or environmental aspect, but rather in community based multi-level intervention approaches (MIAs) that integrate individual, community, organisational, and societal systems.OBJECTIVESSPOTLIGHT aims to increase and combine knowledge on the wide range of determinants of obesity in a systematic way, and to identify MIAs that are strong in terms of Reach, Efficacy, Adoption, Implementation and Maintenance (RE-AIM). A further aim is to identify factors for successful implementation of MIAs into health promotion practice.APPROACHBy combining published research and collected cross-European data with expert and target-group perspectives, effective, sustainable and implementable MIAs that counteract obesogenic behaviours in adults will be defined.ACHIEVEMENTSWe will provide an evidence-based model for effective MIAs in health promotion practice applicable across Europe, and disseminate our findings by policy makers and the scientific community. We will develop a handbook with evidence- and practice-based instructions as well as practical recommendations for policies and interventions, suggestions and reference to best practice that serve as a major dissemination tool.IMPACTThrough systematic dissemination of SPOTLIGHT outcomes, the project supports the development and implementation of effective MIAs by local authorities and public health practitioners in order to prevent obesity, reduce the social gradient, and so prevent the related chronic diseases.