“…14 Systems approaches are being used to design obesity interventions, food system policies, and other public health interventions, to identify the most effective places to intervene in systems, to model potential consequences of interventions, and to identify sets of interventions in which the interventions reinforce rather than undermine one another (Box). 14,21,33,35,40,45,46 Systems methods also are being used to monitor and evaluate obesity interventions, 46,[49][50][51] to understand how social relationships and networks operate, to explore how this operation can be leveraged to improve outcomes, 52,53 and to understand important social, economic, and political contexts. These methods also can be used to identify political obstacles to progress, policies that might alienate potential supporters, and policies that might build a broad alliance beyond public health.…”