Department of Agricultural and Applied Economics, University of Georgia, Athens, GA, USA.
Department of Agricultural Economics, University of Kentucky, Lexington, KY, USA.
Nat Food. 2024 Feb;5(2):171-181. doi: 10.1038/s43016-024-00927-w. Epub 2024 Feb 21.
Healthy diets are not affordable to all in Africa due to a combination of high food prices and low incomes. However, how African consumers might change demand patterns if prices or incomes were to change remains poorly understood. Using nationally representative household panel survey data from five sub-Saharan African countries, we model consumer preferences and examine how nutrient intake responds to changing food prices, total expenditures and other demand determinants. Here we find a stronger positive relationship between growth in poor consumers' total expenditures and their nutrient intake adequacy than has been previously documented. We also find that poor consumers' intake adequacy is especially sensitive to food staple prices in countries where one food staple dominates poor consumers' diets. In countries with multiple food staples, no single staple's price is a strong determinant of poor consumers' dietary intake adequacy.
由于食品价格高和收入低的双重原因,在非洲,并非所有人都能负担得起健康的饮食。然而,如果价格或收入发生变化,非洲消费者的需求模式会如何变化,这一点仍不甚明了。本文利用撒哈拉以南五个非洲国家的全国代表性家庭面板调查数据,对消费者偏好进行建模,并研究了营养摄入是如何对食品价格、总支出和其他需求决定因素的变化做出反应的。研究结果表明,在贫困消费者总支出增长与营养摄入充足率之间存在比之前记录的更为显著的正相关关系。此外,研究还发现,在主食在贫困消费者饮食中占主导地位的国家,贫困消费者的摄入充足率对主食价格尤其敏感。而在拥有多种主食的国家,没有任何一种主食的价格是贫困消费者饮食摄入充足率的重要决定因素。