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

Nutrients
N KhandpurPatrícia Constante Jaime

Abstract

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. 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 responses between WLs and TLLs between control and label conditions were estimated using one-way ANOVAs or Chi-square tests. Presenting WLs on products compared to TLLs helped participants: (i) improve their understanding of excess nutrient content (27.0% versus 8.2%, p < 0.001); (ii) improve their ability to identify the healthier product (24.6% versus 3.3%, p < 0.001); (iii) decrease perceptions of product healthfulness; and (iv) correctly identify healthier products (14.0% versus 6.9%, p < 0.001), relative to the control condition. With WLs, there was also an increase in the percentage of people: (v) expressing an intention to purchase the relatively healthier option (16.1% versus 9.8%, p < 0.001); and (vi) choosing not to buy either product ...Continue Reading

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Citations

Oct 26, 2018·Obesity·Neha KhandpurCarlos A Monteiro
Jan 9, 2019·Obesity Reviews : an Official Journal of the International Association for the Study of Obesity·Claudia NietoSimón Barquera
Nov 26, 2019·Health Education & Behavior : the Official Publication of the Society for Public Health Education·Gastón AresIsabel Bove
Jul 17, 2019·The International Journal of Behavioral Nutrition and Physical Activity·Manon EgnellChantal Julia
Jan 3, 2020·International Journal of Evidence-based Healthcare·Rodrigo Feteira-SantosOsvaldo Santos
May 5, 2020·Journal of Human Nutrition and Dietetics : the Official Journal of the British Dietetic Association·H CrokerR M Viner
Jun 10, 2020·Public Health Nutrition·Ana Clara DuranAna Paula Bortoletto Martins
Jul 10, 2019·BMC Public Health·Marcela ReyesCamila Corvalán
Oct 18, 2019·American Journal of Public Health·Zenobia TalatiSimone Pettigrew
Oct 19, 2019·The International Journal of Behavioral Nutrition and Physical Activity·Claudia NietoJames F Thrasher
Dec 15, 2018·Obesity Reviews : an Official Journal of the International Association for the Study of Obesity·Camila CorvalánRicardo Uauy
Jun 27, 2019·PloS One·Priscila de Morais SatoFernanda Baeza Scagliusi
Aug 28, 2020·Nutrients·Nicole IdeLaura K Cobb
Jun 20, 2020·Current Atherosclerosis Reports·Naglaa H El-AbbadiJeffrey B Blumberg
Jul 8, 2020·Journal of Nutrition Education and Behavior·Gastón AresIsabel Bove
Feb 7, 2021·International Journal of Environmental Research and Public Health·Rodrigo Feteira-SantosPedro Graça
Nov 21, 2020·The International Journal of Behavioral Nutrition and Physical Activity·Manon EgnellChantal Julia
Jun 12, 2021·The International Journal of Behavioral Nutrition and Physical Activity·Carlos Cruz-CasarrubiasSimón Barquera
Jun 22, 2021·Obesity Reviews : an Official Journal of the International Association for the Study of Obesity·Ana Clara DuranLindsey Smith Taillie
Aug 28, 2021·Nutrients·Carmen Romero FerreiroAgustín Gómez de la Cámara
Dec 6, 2018·Salud colectiva·Marcela Reyes Jedlicki
Dec 6, 2018·Salud colectiva·Lorena AllemandiLeila Guarnieri

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