Food labels such as the Nutri-Score and carbon labels can help consumers to identify and choose healthier and more sustainable options. Such labels can also incentivise food manufacturers and retailers to develop and offer healthier products with a lower environmental footprint. While the effectiveness of labels has been shown in principle, little is known about what happens when multiple labels are placed on the same product, and how label design and placement can be optimised in light of such interaction effects. These questions are of increasing relevance as multiple labels are rolled out simultaneously in Germany, the EU and beyond.

To address these questions, we will produce two deliverables:

1. A scoping review on interaction effects between nutritional and environmental labels.
    
2. A randomized laboratory experiment on interactions between the Nutri-Score and selected environmental labels currently in use or under development in the EU and Germany.
    

Publications from this work package

Study protocols:

• Jürkenbeck K, von Philipsborn P, Lemken D, Elsner R, Schulze M: Interaction effects between food labels related to health- and environmental aspects: A scoping review protocol. Open Science Framework (OSF) 2024. (Online, open access)