Pulse Brain · Growing Health Evidence Index
Tier 4 — Narrative / commentaryPeer-reviewed

Four ways blue foods can help achieve food system ambitions across nations

Beatrice Crona, Emmy Wassénius, Malin Jonell, J. Zachary Koehn, Rebecca Short, Michelle Tigchelaar, Tim M. Daw, Christopher D. Golden, Jessica A. Gephart, Edward H. Allison, Simon R. Bush, Ling Cao, William W. L. Cheung, Fabrice DeClerck, Jessica Fanzo, Stefan Gelcich, Avinash Kishore, Benjamin S. Halpern, Christina C. Hicks, James P. Leape, David C. Little, Fiorenza Micheli, Rosamond L. Naylor, Michael J. Phillips, Elizabeth R. Selig, Marco Springmann, U. Rashid Sumaila, Max Troell, Shakuntala H. Thilsted, Colette C. C. Wabnitz

Nature · 2023

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Summary

This policy-analytical framework, derived from the broader Blue Food Assessment, translates multidimensional evidence on aquatic food systems into four geographically contextualised policy objectives. The authors demonstrate that blue foods' contributions to nutrition, health, livelihoods and environmental sustainability vary substantially by national context: in many African and South American nations, increased blue food consumption could address micronutrient deficiencies, whilst in global North nations, moderate seafood consumption could reduce ruminant meat-related cardiovascular disease and emissions. The framework identifies countries at high climate adaptation risk and provides decision-makers with tools to evaluate policy priorities and associated trade-offs.

UK applicability

For the United Kingdom, the framework's findings on using low-impact seafood to displace high-emission ruminant meat and reduce cardiovascular disease prevalence are directly applicable. The UK's existing seafood consumption patterns and established aquaculture systems position it within the 'global North' context where the authors identify potential health and environmental benefits from dietary shift.

Key measures

Nutritional contributions (B12, omega-3 content), environmental impacts (greenhouse gas emissions, land and water use), economic value, justice considerations, climate adaptation risk, cardiovascular disease reduction potential, dietary environmental footprints

Outcomes reported

The study assessed nutritional, environmental, economic and justice dimensions of blue foods globally and developed an analytical framework identifying four policy objectives: ensuring critical nutrient supplies, providing healthy alternatives to terrestrial meat, reducing dietary environmental footprints, and safeguarding blue food contributions under climate change. It evaluated the relevance and trade-offs of these objectives across individual countries.

Theme
Policy, governance & rights
Subject
Food & agricultural policy
Study type
Policy
Study design
Policy report
Source type
Peer-reviewed study
Status
Published
Geography
Global
System type
Aquaculture
DOI
10.1038/s41586-023-05737-x
Catalogue ID
BFmovi2bj3-0i9tfn

Topic tags

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