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  • Title: The Influence of Sugar-Sweetened Beverage Warnings: A Randomized Trial of Adolescents' Choices and Beliefs.
    Author: VanEpps EM, Roberto CA.
    Journal: Am J Prev Med; 2016 Nov; 51(5):664-672. PubMed ID: 27617366.
    Abstract:
    INTRODUCTION: California, New York, and the cities of San Francisco and Baltimore have introduced bills requiring health-related warning labels for sugar-sweetened beverages. This study measures the extent to which these warning labels influence adolescents' beliefs and hypothetical choices. DESIGN: Participants completed an online survey in which they chose a beverage in a hypothetical vending machine task, rated perceptions of different beverages, and indicated interest in coupons for beverages. Data were collected and analyzed in 2015. SETTING/PARTICIPANTS: A total of 2,202 demographically diverse adolescents aged 12-18 years completed the online survey. INTERVENTION: Participants were randomly assigned to one of six conditions: (1) no warning label; (2) calorie label; (3-6) one of four text versions of a warning label (e.g. , SAFETY WARNING: Drinking beverages with added sugar(s) contributes to obesity, diabetes, and tooth decay). MAIN OUTCOME MEASURES: Hypothetical choices, perceptions of beverages, interest in coupons, and endorsement of warning label policies were assessed. RESULTS: Controlling for frequency of beverage purchases, significantly fewer adolescents chose a sugar-sweetened beverage in three of the four warning label conditions (65%, 63%, and 61%) than in the no label (77%) condition. Adolescents in the four warning label conditions chose fewer sugar-sweetened beverage coupons and believed that sugar-sweetened beverages were less likely to help them lead a healthy life and had more added sugar compared with the no label condition. CONCLUSIONS: Health-related warning labels on sugar-sweetened beverages improved adolescents' recognition of the sugar content of such beverages and reduced hypothetical choices to buy sugar-sweetened beverages.
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