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GTAP Resource #7804

"Estimating Global Food Waste Across Commodities and Supply Stages"
Authors: Liu, Jing, Maksym Chepeliev, Alessandro Gatto and Marco Springmann


Abstract
Food loss and waste (FLW) is a central challenge for global food security, environmental sustainability, and agricultural markets (U.N., 2019). Reducing FLW has been identified as a promising pathway to ease pressure on food supply, lower food prices, and mitigate environmental impacts. Despite its importance, comprehensive and internally consistent estimates of FLW shares across countries, commodities, and supply-chain stages remain limited (Helander et al., 2021; Sheahan and Barrett, 2017). Existing data sources are fragmented: FAO provides detailed food supply data by country and commodity, while dietary intake estimates are typically available only at aggregated levels, and empirical FLW estimates are sparse, heterogeneous, and unevenly distributed across regions and food categories (Gatto and Chepeliev, 2024). As a result, directly reconciling food supply and waste data often leads to inconsistencies and implausible net intakes. This study develops a statistically disciplined framework to estimate and calibrate global food waste shares that preserves heterogeneity while enforcing aggregate consistency and alignment with available data on net food intakes.


Resource Details () GTAP Keywords
Category: 2026 Conference Paper
Status: Published
By/In: Presented during the 29th Annual Conference on Global Economic Analysis (Kyoto, Japan)
Date: 2026
Version:
Created: Liu, J. (4/14/2026)
Updated: Liu, J. (4/14/2026)
Visits: 11
- Food prices and food security
- Global


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