Melissa L Jensen1,2,3, Francesca Dillman Carpentier4, Linda Adair1, Camila Corvalán5, Barry M Popkin1,2, Lindsey Smith Taillie1,2. 1. Department of Nutrition, Gillings School of Global Public Health, University of North Carolina, Chapel Hill, North Carolina, USA. 2. Global Food Research Program, Carolina Population Center, Chapel Hill, North Carolina, USA. 3. School of Nutrition, University of Costa Rica, San José, Costa Rica. 4. Hussman School of Media and Journalism, University of North Carolina, Chapel Hill, North Carolina, USA. 5. Instituto de Nutrición y Tecnología de Alimentos, Universidad de Chile, Macul, Chile.
Abstract
BACKGROUND: The Chilean government implemented the first phase of a comprehensive marketing policy in 2016, restricting child-directed marketing of products high in energy, total sugars, sodium or saturated fat (hereafter "high-in"). OBJECTIVES: To examine the role that high-in TV food advertising had in the effect of the policy on consumption of high-in products between 2016 and 2017. METHODS: Dietary data were obtained from 24-hour diet recall measured in 2016 (n = 940) and 2017 (n = 853), pre- and post-policy, from a cohort of 4 to 6 years children. Television use was linked to analyses of food advertisements to derive individual-level estimates of exposure to advertising. A multilevel mediation analysis examined direct and indirect effects of the policy through advertising exposure. RESULTS: Children's high-in food consumption and advertising exposure declined significantly from 2016 to 2017 (P < .01). Consumption changes were not significantly mediated by changes in advertising exposure, which might suggest other elements of the Chilean Law potentially driving decreases in consumption to a greater extent than TV ads. CONCLUSIONS: Preschoolers' exposure to high-in advertising and consumption of high-in products decreased post-policy. Further research is needed to understand how marketing changes will relate to dietary changes after full implementation of the law and in the long term.
BACKGROUND: The Chilean government implemented the first phase of a comprehensive marketing policy in 2016, restricting child-directed marketing of products high in energy, total sugars, sodium or saturated fat (hereafter "high-in"). OBJECTIVES: To examine the role that high-in TV food advertising had in the effect of the policy on consumption of high-in products between 2016 and 2017. METHODS: Dietary data were obtained from 24-hour diet recall measured in 2016 (n = 940) and 2017 (n = 853), pre- and post-policy, from a cohort of 4 to 6 years children. Television use was linked to analyses of food advertisements to derive individual-level estimates of exposure to advertising. A multilevel mediation analysis examined direct and indirect effects of the policy through advertising exposure. RESULTS: Children's high-in food consumption and advertising exposure declined significantly from 2016 to 2017 (P < .01). Consumption changes were not significantly mediated by changes in advertising exposure, which might suggest other elements of the Chilean Law potentially driving decreases in consumption to a greater extent than TV ads. CONCLUSIONS: Preschoolers' exposure to high-in advertising and consumption of high-in products decreased post-policy. Further research is needed to understand how marketing changes will relate to dietary changes after full implementation of the law and in the long term.
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