Options for keeping the food system within environmental limits

Summary

This Nature paper by Springmann and colleagues presents an integrated modelling framework examining how global food systems can remain productive and nutritious whilst respecting critical environmental planetary boundaries. Drawing on data spanning agriculture, nutrition, and environmental science, the authors evaluate multiple pathways—including dietary shifts toward plant-based foods, reductions in food waste, and targeted agricultural innovation—to identify feasible combinations that avoid exceeding limits on climate, land, water, and nutrient cycling. The work suggests that no single intervention suffices; rather, a portfolio approach combining dietary change in high-income regions with continued agricultural improvements in lower-income countries offers the most promising route to food security within environmental constraints.

UK applicability

The findings are directly relevant to UK food policy and agricultural strategy, particularly given national net-zero and environmental land management commitments. The paper's emphasis on dietary patterns and waste reduction aligns with emerging UK dietary guidelines and circular economy objectives, whilst its analysis of agricultural intensification trade-offs informs debates on sustainable farming subsidies and import dependencies.

Key measures

Greenhouse gas emissions, land use, freshwater use, nitrogen and phosphorus application, dietary patterns, food waste, agricultural productivity, nutritional adequacy

Outcomes reported

The study modelled scenarios for aligning global food production and consumption with environmental planetary boundaries across climate, land use, freshwater, and nitrogen/phosphorus cycles. It assessed trade-offs between dietary change, agricultural intensification, food waste reduction, and technological innovation in meeting future food security whilst staying within environmental limits.

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