Analyze a complex public health challenge such as rising obesity rates in urban populations. Map the interconnected systems involved (healthcare, food systems, urban planning, education, economics, social structures, etc.) and identify at least 10 causal loops or feedback mechanisms that influence the problem. Then, identify potential leverage points for intervention, categorizing them as: (1) low effort/low impact, (2) low effort/high impact, (3) high effort/low impact, and (4) high effort/high impact. Explain your rationale for each categorization and propose a sequence of interventions that would maximize impact while considering system resistance and unintended consequences. Include a discussion of how you would measure the effectiveness of interventions and adapt the approach based on system feedback.