Reducing obesity is a national priority health area and for Pacific children and young people burdened with disparate rates of the condition, the call is more urgent. There is insufficient evidence about what obesity interventions work for this population group. The proposed project builds on the findings of the applicant's PhD study titled Obesity in Pacific adolescents: A socio-cultural study, the findings of which will be used to develop an obesity treatment programme for Pacific children and their families. The purpose of the research is to investigate factors that both enable and are a barrier to successful weight loss and maintenance amongst Pacific children and families. To build further evidence for designing effective obesity interventions for Pacific populations, the study will also follow-up participant drop-outs to investigate factors that were a barrier to programme participation and study an international example of community-based obesity interventions for minority groups.