Least-cost diets to teach optimization and consumer behavior, with applications to health economics, poverty measurement and international development

Jessica K. Wallingford and William A. Masters

The Journal of Economic Education, 2025, vol. 56, issue 2, 171-186

Abstract: The least-cost diet problem introduces students to optimization and linear programming using the health consequences of food choice. The authors provide a graphical example, Excel workbook, and Word template with actual data on item prices, food composition, and nutrient requirements for a brief exercise in which students guess and then solve for nutrient adequacy at the lowest cost. They compare modeled diets to actual consumption, which has varying degrees of nutrient adequacy. The graphical example is a “three sisters” diet of corn, beans, and squash, and the full multidimensional model is compared to current food consumption in Ethiopia. This updated Stigler diet shows how cost minimization relates to utility maximization and links to ongoing research and policy debates about the affordability of healthy diets worldwide.

Date: 2025
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DOI: 10.1080/00220485.2025.2465384

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