<p>Protecting public health is the most legitimate use of zoning, and yet there is minimal progress in applying it to the obesity problem. Zoning could potentially be used to address both unhealthy and healthy food retailers, but lack of evidence regarding the impact of zoning and public opinion on zoning changes are barriers to implementing zoning restrictions on fast food on a larger scale. My dissertation addresses these gaps in our understanding of health zoning as a policy option for altering built, food environments. </p><p>Chapter 1 examines the relationship between food swamps and obesity and whether spatial mapping might be useful in identifying priority geographic areas for zoning interventions. I employ an instrumental variables (IV) strategy to correct for the endogeneity problems associated with food environments, namely that individuals may self-select into certain neighborhoods and may consider food availability in their decision process. I utilize highway exits as a source of exogenous variation .Using secondary data from the USDA Food Environment Atlas, ordinary least squares (OLS) and IV regression models were employed to analyze cross-sectional associations between local food environments and the prevalence of obesity. I find even after controlling for food desert effects, food swamps have a positive, statistically significant effect on adult obesity rates.</p><p>Chapter 2 applies theories of message framing and prospect theory to the emerging discussion around health zoning policies targeting food environments and to explore public opinion toward a list of potential zoning restrictions on fast-food restaurants (beyond moratoriums on new establishments). In order to explore causality, I employ an online survey experiment manipulating exposure to vignettes with different message frames about health zoning restrictions with two national samples of adult Americans age 18 and over (N1=2,768 and N2=3,236). The second sample oversamples Black Americans (N=1,000) and individuals with high school as their highest level of education. Respondents were randomly assigned to one of six conditions where they were primed with different message frames about the benefits of zoning restrictions on fast food retailers. Participants were then asked to indicate their support for six zoning policies on a Likert scale. Subjects also answered questions about their food store access, eating behaviors, health status and perceptions of food stores by type. </p><p>I find that a message frame about Nutrition and increasing Equity in the food system was particularly effective at increasing support for health zoning policies targeting fast food outlets across policy categories (Conditional, Youth-related, Performance and Incentive) and across racial groups. This finding is consistent with an influential environmental justice scholar’s description of “injustice frames” as effective in mobilizing supporters around environmental issues (Taylor 2000). I extend this rationale to food environment obesity prevention efforts and identify Nutrition combined with Equity frames as an arguably universal campaign strategy for bolstering public support of zoning restrictions on fast food retailers.</p><p>Bridging my findings from both Chapters 1 and 2, using food swamps as a spatial metaphor may work to identify priority areas for policy intervention, but only if there is an equitable distribution of resources and mobilization efforts to improve consumer food environments. If the structural forces which ration access to land-use planning persist (arguably including the media as gatekeepers to information and producers of message frames) disparities in obesity are likely to widen.</p> / Dissertation

United States' policy makers have been challenged creating understandable nutrition labels and effective healthy food campaigns for consumers of mixed heritage. Previous studies explored the sociocultural factors that influence Hispanics' abilities to navigate consumer food education programs, but little was known about how Mexican culture impacts those programs. The purpose of this study was to better understand those factors. Research questions focused on the experiences of residents of a west Texas town regarding their food decision-making process about food choices and their understanding of food education information. The purpose of this phenomenological research was to explore how Mexican culture effected navigation through these programs. I used the theory of dietary acculturation, environmental theory, and advocacy coalition framework as the lenses to view this phenomenon. Data were generated from 9 interviews with primary decision makers concerning food choices for their households. Interview data were open coded to obtain themes suggested by study participants. Results indicated that participants considered healthy food and used varying approaches when selecting healthy food. Family time was an important factor in food choice. Healthy foods messages came from personal physicians, local marketing, and government agencies. The quality and cost of American products were often a consideration. Participants indicated that access to current health information and Mexican food products are integral to making future healthy food choices. The implications for positive social change may include raising awareness among state and federal policy makers of the factors influencing healthy food choices in effective nutrition labeling and healthy food education programs.