Traffic-light front-of-pack environmental labelling across food categories triggers more environmentally friendly food choices: a randomised controlled trial in virtual reality supermarket

International Journal of Behavioral Nutrition and Physical Activity

Research

Lucile Marty¹  Laura Arrazat¹  Sophie Nicklaus¹  Gaëlle Arvisenet¹  Stéphanie Chambaron¹  Jean-Christophe Charrier²  Isabelle Goisbault² 

[1] Centre Des Sciences Du Goût Et de L’Alimentation, CNRS, INRAE, Institut Agro, Université Bourgogne Franche-Comté, 17 Rue Sully, 21065, Dijon Cedex, France;Strategir – R&D and Image and Technology Department, 5 Rue Foy, 33000, Bordeaux, France;

关键词: Environmental labelling;    Food choice;    Supermarket;    Virtual reality;   

DOI  :  10.1186/s12966-023-01410-8

 received in 2022-04-04, accepted in 2023-01-10,  发布年份 2023

来源: Springer

【 摘 要 】

BackgroundFood systems highly contribute to anthropogenic greenhouse gas emissions and shifting towards more environmentally friendly diets is urgently needed. Enabling consumers to compare the environmental impact of food products at point-of-purchase with front-of-pack labelling could be a promising strategy to trigger more environmentally friendly food choices. This strategy remained to be tested.MethodsThe effect of a new traffic-light front-of-pack environmental label on food choices was tested in a 2-arm randomised controlled trial in a virtual reality supermarket. Participants (n = 132) chose food products to compose two main meals for an everyday meal scenario and for an environmentally friendly meal scenario with or without the label. The environmental label (ranging from A: green/lowest impact, to E: red/highest impact) was based on the Environmental Footprint (EF) single score calculation across food categories. The effect of the label on the environmental impact of food choices in each scenario was tested using linear mixed models.ResultsIn the everyday meal scenario, the environmental impact of meals was lower in the label condition than in the no label condition (-0.17 ± 0.07 mPt/kg, p = 0.012). This reduction was observed at no nutritional, financial nor hedonic cost. The effectiveness of the label can be attributed to a change in the food categories chosen: less meat-based and more vegetarian meals were chosen with the label. In the environmentally friendly meal scenario, we demonstrated that the label provided new information to the participants as they were able to further reduce the environmental impact of their food choices with the label (-0.19 ± 0.07 mPt/kg, p = 0.005).ConclusionsImplementing a front-of-pack environmental label on food products in real supermarkets could increase awareness of the environmental impact of food and contribute to drive more environmentally friendly food choices.Trial registrationThe study protocol was pre-registered prior to data collection at Clinicaltrials.gov (NCT04909372).

【 授权许可】

CC BY   
© The Author(s) 2023

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