Do interventions to reduce and prevent childhood obesity work?

Do interventions to reduce and prevent childhood obesity work?
Its a Systematic Review -focus on certain age group (narrow down by age) -focus on the study in Europe -introduce child obesity and why intervention is needed -different type of intervention… -Are they effective? -…..etc…. An essay at MSc level needs to be analytical and critical. Published review papers can provide ideas on how to approach this essay. Sometimes methodological issues are important as well. An issue of particular importance in many contexts is the design of the study (longitudinal or cross-sectional) and whether studies rely on self-reports Overall you need to develop an argument based on the published literature or even the absence of relevant research. This argument should lead to an appropriate conclusion. Remember this is your essay and you are free to make some bold statements, particularly in the conclusion, based on your insights derived from your review of the evidence.