GTAP Resources: Resource Display
| GTAP Resource #7468 |
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"How the shift to healthier and more sustainable diets is made affects the scope for diet change and its environmental, and distributional outcomes - a global modelling study with the MAGNET model" by Kuiper, Marijke, Thijs De Lange, Willem-Jan Van Zeist and Hans van Meijl Abstract The EAT-Lancet (EL) report made a convincing case that a transformative diet shift could yield substantial health benefits while helping to respect key planetary boundaries. Shifting to a more plant based diet requires an unprecedented break from historic trends of rising meat consumption. By imposing a diet exogenously, existing studies do not provide guidance on interventions to shift diets, nor on differences between interventions in economic, environmental and distributional impacts. This economic modelling study uses MAGNET to explore different pathways towards the EL diet between 2025 and 2050. We define a bundle of three types of context-specific interventions: (1) nudging consumer preferences through education and food environment changes, (2) adjusting fiscal policies by removing taxes on healthy foods and subsidies on unhealthy ones, and (3) introducing new price signals, such as taxes on high-emission foods and subsidies for healthier foods. To evaluate how choice of interventions affects economic, environmental and distributional outcomes we analyse interactions of combined interventions, and compare the policy bundle to an exogenous shift to the EL diet. While reducing over- and under-consumption the policy bundle leaves a big gap with EL diet recommendations. No single intervention shifts all diet components in the desired direction and effectiveness varies by region. Price instruments directing consumption to efficient producers improve diet outcomes at lower costs than consumer preference shifts relying on information alone. GHG emissions decrease more with a partial diet shift achieved through the policy bundle than if the full EL diet is imposed exogenously. Consumer-focused preference shifts lack incentives to redirect towards more efficient producers provided by GHG taxation. Preference shifts decrease diet affordability for the average household driven by limits to domestic fruit and vegetable production only partly moderated by rising imports. |
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- Climate change policy - Land use - Sustainable development - Trade and the environment - Agricultural policies - Food prices and food security - Economic analysis of poverty - Global |
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Public Access No documents have been attached. Restricted Access No documents have been attached. Special Instructions article under review |
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Last Modified: 9/15/2023 2:05:45 PM
