2018
DOI: 10.3390/nu10060688
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Are Front-of-Package Warning Labels More Effective at Communicating Nutrition Information than Traffic-Light Labels? A Randomized Controlled Experiment in a Brazilian Sample

Abstract: Background: Brazil is currently debating the implementation of front-of-package labels. This study tested if Warning labels (WLs) improved consumer understanding, perceptions, and purchase intentions compared to Traffic-Light labels (TLLs) in 1607 Brazilian adults. Methods: In this online, randomized controlled experiment participants saw images of 10 products and answered questions twice—once in a no-label, control condition and then again in a randomly assigned label condition. The relative differences in re… Show more

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Cited by 164 publications
(170 citation statements)
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“…Taken together, our findings from a large sample of Brazilian packaged foods and beverages, sold in supermarkets in the country that control 70% of the retail market share contribute to the literature by showing the pervasive presence of nutrition and health claims in unhealthy products, even more so among those highly consumed by children and adolescents [2,25,40]. Although FoP labeling in the format of warning signs seems to be effective in nudging consumers to choose healthier products [8,11,14,43], when these signs are accompanied by nutrition claims for the same nutrient for which a warning sign is present in the package, this can undermine the efficacy of FoP labeling [17]. Health and nutrition claims have been associated with purchase behavior [44].…”
Section: Discussionsupporting
confidence: 55%
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“…Taken together, our findings from a large sample of Brazilian packaged foods and beverages, sold in supermarkets in the country that control 70% of the retail market share contribute to the literature by showing the pervasive presence of nutrition and health claims in unhealthy products, even more so among those highly consumed by children and adolescents [2,25,40]. Although FoP labeling in the format of warning signs seems to be effective in nudging consumers to choose healthier products [8,11,14,43], when these signs are accompanied by nutrition claims for the same nutrient for which a warning sign is present in the package, this can undermine the efficacy of FoP labeling [17]. Health and nutrition claims have been associated with purchase behavior [44].…”
Section: Discussionsupporting
confidence: 55%
“…Similar to the Chilean FoP warning label system, as well as systems adopted in Uruguay, Peru, and currently under final discussions in Mexico and Canada, the proposed labels in Brazil will be able to identify unhealthy foods only and would be applied to products containing excessive levels of added sugar, saturated fat, and sodium with the words "high in (sugar, saturated fat, or sodium)" [6]. Warning labels have been shown to be easier to understand than competing systems such as the traffic light among various groups, including Brazilians [7,8]. In the same proposal, Anvisa lays out options for restricting the use of nutrition claims in foods high in critical nutrients [9].…”
Section: Introductionmentioning
confidence: 99%
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“…The WL design alerts the consumer to products whose ingredients contribute to an excess of sodium, sugars, or fats, with individual WLs present for every nutrient in excess. WLs are also easier to interpret than other labels , with multiple WLs reiterating consistent information and implicitly encouraging consumers, both adults and children, to seek foods with fewer or no WLs.…”
Section: Warning Labels Are Consistent In the Information They Communmentioning
confidence: 99%
“…For example, in the Mexican National Health and Nutrition Survey Survey of 2016, only 41% declared they use the labelling . Also, there is evidence that other types of labels could be more effective …”
Section: Discussionmentioning
confidence: 99%