Healthy diets are affordable but often displaced by other foods in Indonesia

2025-09-24

AI Summary

Despite over 98% of Indonesian households possessing sufficient economic capacity to afford healthy diets, actual consumption patterns deviate markedly from national dietary guidelines—characterized by excessive intake of non-essential foods and widespread underconsumption of fruits, vegetables, legumes, and nuts, even among high-income households. Method: We develop a minimum-cost healthy diet model integrating regional retail price data with nationally representative household consumption surveys, and propose a “three-step analytical framework” to systematically identify non-economic determinants—including taste preferences, convenience constraints, and marketing/sociocultural influences—shaping dietary choices. Contribution/Results: This framework transcends conventional affordability-centric approaches, offering a novel behavioral paradigm for understanding nutrition transitions in low- and middle-income countries. It provides empirically grounded insights to inform targeted, context-sensitive nutrition policy interventions.

Technology Category

• Game Theory and Economic Paradigms: Imperfect Information
• Knowledge Representation and Reasoning: Preferences
• Machine Learning: Learning Preferences or Rankings

Application Category

• User Modeling, Personalization and Recommendation: Metrics for user behavior and evaluating success
• Economics, Online Markets and Human Computation: The sharing economy
• Web Mining and Content Analysis: Models for Web evolution

Abstract

New methods for modeling least-cost diets that meet nutritional requirements for health have emerged as important tools for informing nutrition policy and programming around the world. This study develops a three-step approach using cost of healthy diet to inform targeted nutrition programming in Indonesia. We combine detailed retail prices and household survey data from Indonesia to describe how reported consumption and expenditure patterns across all levels of household income diverge from least cost healthy diets using items from nearby markets. In this analysis, we examine regional price variations, identify households with insufficient income for healthy diets, and analyze the nutrient adequacy of reported consumption patterns. We find that household food spending was sufficient to meet national dietary guidelines using the least expensive locally available items for over 98% of Indonesians, but almost all households consume substantial quantities of discretionary foods and mixed dishes while consuming too little energy from fruits, vegetables, and legumes, nuts, and seeds. Households with higher incomes have higher nutrient adequacy and are closer to meeting local dietary guidelines, but still fall short of recommendations. These findings shed new light on how actual food demand differs from least-cost healthy diets, due to factors other than affordability, such as taste, convenience, and aspirations shaped by marketing and other sociocultural influences.

Problem

• Modeling least-cost healthy diets to address nutritional gaps in Indonesia
• Analyzing divergence between actual consumption patterns and affordable healthy diets
• Identifying non-affordability barriers to healthy eating like taste and convenience

Innovation

• Combining retail prices with household survey data
• Analyzing regional price variations and nutrient adequacy
• Identifying income gaps for healthy diet affordability