Abstract
Background: Food waste is often framed as a technical or awareness problem, yet it persists most in societies best equipped to prevent it, pointing to overconsumption rather than logistics alone. This study tests whether food-system abundance, environmental pressure and food waste covary across countries, and whether food ethics and food citizenship help explain it. Methods: Using cross-country indicators from FAO, WHO, Global Carbon Project, World Bank, and UNEP for 20 purposively selected countries, a composite Systemic Pressure Index (five standardised indicators: dietary energy supply, obesity, meat consumption, CO₂ emissions, food waste) yielded a three-tier typology, cross-checked with principal component analysis. Results: Tier 1 (US, Australia, Mexico, Romania, Greece, Brazil, Poland) shows the highest abundance and pressure. Food waste, however, loads on a distinct PCA dimension (PC2, 20.8% variance, r = 0.93 vs r = 0.33 with PC1); the lowest-pressure tier splits into an affluent-moderate subtype (Sweden, Japan; lowest waste, 80.3 kg/capita/year) and a lower-income/constrained subtype with comparatively high waste (125.6 kg/capita/year) despite minimal consumption. Conclusions: Food waste behaves as a comparatively independent outcome rather than a by-product of abundance. Food ethics and food citizenship translate into differentiated, behavioural and policy interventions for food security and sustainability across typology tiers.