Cost and Affordability Analysis of Healthy, Organic, and Agroecological Diets Using Linear Programming: A Case Study from Buenos Aires, Argentina

The global malnutrition crisis—marked by the simultaneous presence of hunger, undernutrition, and obesity—affects billions of people worldwide. This complex and widespread issue is deeply intertwined with today’s escalating environmental challenges, including climate change, soil degradation, and biodiversity loss. These problems are largely driven by the current food systems, which not only fail to provide adequate nutrition for all but also contribute significantly to environmental degradation. Argentina, as a major global food producer, exemplifies this paradox: despite its vast agricultural capacity, nearly 70% of its population suffers from some form of malnutrition. This paper examines the potential of organic agriculture and agroecology to transform food systems in ways that promote sustainability and health, aligning with the United Nations Sustainable Development Goals (SDGs). Focusing on Buenos Aires, the study investigates the availability, cost, and affordability of organic and agroecological diets in accordance with both international and national dietary guidelines. This is the first study in Argentina—and among the first internationally—to analyze the affordability of diets exclusively based on organic and agroecological products. Linear programming is applied to assess these diets in relation to the basic food basket, revealing economic challenges and opportunities within the city’s food landscape. The results demonstrate the validity of the model in identifying the costs and potential economic accessibility of such diets for the population, providing valuable insights for segmenting and clarifying potential pathways for scaling these diets, as well as comparing different contexts and realities.