Tackling the social determinants of childhood obesity in the United States: policy brief and lessons for developed and emerging economies
Résumé
Background: Childhood obesity has surged dramatically in the United States over the past three decades, with over 30% of children now classified as overweight or obese. This rising trend presents a major public health and economic challenge, with obesity-related costs rising from just over 1% of United States gross domestic product in 2005 to 3.3% in 2019 and projected to reach 4.6% by 2060 if left unaddressed. Analysis: While conventional narratives often attribute obesity to poor individual choices, this policy brief highlights the broader social determinants that shape childhood obesity across different levels of influence. Using a Socio-ecological Model Framework, the brief explores individual, interpersonal, community, and policy-level contributors, including genetic factors, psychosocial stress, family and cultural influences, school and neighborhood food environments, targeted marketing by food corporations, and regulatory gaps. Policy Implications: The brief concludes by recommending four upstream policy interventions. These include banning the sale of unhealthy foods within school premises and promoting healthy school food environments through regulation and education, implementing fiscal measures by taxing unhealthy foods and subsidizing healthier alternatives, integrating physical activity into children's daily routines through school based and urban planning policies and Strengthening evidence systems and context-specific research. These strategies provide transferrable policy lessons for addressing childhood obesity in other settings including in low-and middle-income countries experiencing similar nutrition transitions. However, their implementation should be adapted to local health system capacities, food environments and policy contexts.
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