Behavioral Economic Approaches to Childhood Obesity Prevention Nutrition Policies: A Social Ecological Perspective.

Childhood obesity is a significant public health concern associated with the development of the leading causes of death. Dietary factors largely contribute to childhood obesity, but prevention interventions targeting these factors have reported relatively small effect sizes. One potential explanation for the ineffectiveness of prevention efforts is lack of theoretical grounding. Behavioral economic (BE) theory describes how people choose to allocate their resources and posits that some children place higher value on palatable foods (relative reinforcing value of food) and have difficulty delaying food rewards (delay discounting). These seemingly individual-level decision making processes are influenced by higher-level variables (e.g., environment/policy) as described by the social ecological model. The purpose of this manuscript is to provide a theoretical review of policy-level childhood obesity prevention nutrition initiatives informed by BE. We reviewed two policy-level approaches: (1) incentives-/price manipulation-based policies (e.g., sugary drink tax, SNAP pilot) and (2) healthful choices as defaults (Healthy Hunger Free Kids Act/National School Lunch Program, advertising regulations, default items). We review current literature as well as its limitations and future directions. Exploration of BE theory applications for nutrition policies may help to inform future theoretically grounded policy-level public health interventions.

A systematic review examining the relationship between food insecurity and early childhood physiological health outcomes.

Food insecurity, or limited access to nutritious foods, is a significant public health concern especially among vulnerable populations including infants and young children in low-income households. While literature to date has thoroughly examined the psychological and behavioral impacts of food insecurity on children, no known study to date has specifically synthesized the literature exploring the relationship between food insecurity and physiological health outcomes during early childhood. The purpose of this study was to review the literature on physiological health outcomes associated with food insecurity during early childhood among children aged 0-5 years in developed countries. Our literature search sources included PubMed, PsycInfo, CINAHL, and Embase databases. A total of 657 articles published up to September 2019 were reviewed for eligibility by two coders, with a third reviewer in cases of disagreement. Eighty-three articles remained after screening by abstract, with a final 27 studies ultimately included in the final synthesis. This review is registered with PROSPERO and adhered to PRISMA guidelines. In total, 20 articles (74%) noted significant relationships between food insecurity and physiological health outcomes in young children. Findings included an association with overweight or obesity (n = 9), anemia (n = 3), poor child health (n = 3), low birth weight (n = 3), chronic illness (n = 1), special health care needs (n = 1), and increased cortisol (n = 1), in young children who experience food insecurity. Identifying relationships between food insecurity and health outcomes during early childhood has the potential to inform future prevention interventions to reduce health disparities in these vulnerable populations.