Pulse Brain · Growing Health Evidence Index
Peer-reviewed

Effects of environmental impact labels on the sustainability of food purchases: Two randomised controlled trials in an experimental online supermarket

Christina Potter, Rachel Pechey, Michael Clark, Kerstin Frie, Paul Bateman, Brian Cook, Cristina Stewart, Carmen Piernas, John Lynch, Mike Rayner, Joseph Poore, Susan A. Jebb

PLoS ONE · 2022

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Summary

Providing consumers with product-specific environmental impact information for food products (ecolabels) may promote more sustainable purchasing, needed to meet global environmental targets. Two UK studies investigated the effectiveness of different ecolabels using an experimental online supermarket platform. Study 1 (N = 1051 participants) compared three labels against control (no label), while Study 2 (N = 4979) tested four designs against control. Study 1 found significant reductions in the environmental impact score (EIS) for all labels compared to control (labels presented: values for four environmental indicators [-3.9 percentiles, 95%CIs: -5.2,-2.6]; a composite score [taking values from A to E; -3.9, 95%CIs: -5.2,-2.5]; or both together [-3.2, 95%CIs: -4.5,-1.9]). Study 2 showed si

Source type
Peer-reviewed study
DOI
10.1371/journal.pone.0272800
Catalogue ID
BFmoef2s5t-nhpbic
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