Examining cost and affordability of nutrient adequate diets alongside a novel combined market score derived from Fill the Nutrient Gap food price data in the west Sahel

Extensive food price data collected for three Fill the Nutrient Gap nutrition situation analyses were used to calculate two metrics – cost and affordability of nutrient-adequate diets – to assess food and nutrition security at subnational level in the late-dry season and beginning of the dry season in Mauritania. A unique market scoring classification was derived using retail food price data collected in Burkina Faso, Mali, and Mauritania to assess on food price and food assortment (availability) across markets in the three countries. Diet cost and affordability was examined alongside three structural drivers of food insecurity – rainfall, infrastructure (roads) and conflict – to understand how they may have influenced nutritious food prices, diversity and non-affordability during the late-dry season during the period of analysis. Results showed that more diverse low-cost markets and lower non-affordability of nutrient-adequate diets were observed in Burkina Faso's well-connected agricultural areas experiencing no conflict, while limited higher-cost markets were observed in central pastoral areas of Mauritania, and pastoral, agropastoral and some agricultural areas experiencing conflict in Burkina Faso and Mali. In agricultural Mali, despite having diverse low-cost markets, low nutrient-adequate diet cost, sufficient rainfall, seemingly well-connected road networks, these combined factors did not guarantee nutrient-adequate diet affordability, highlighting economic barriers faced by households. Regions affected by both harsh climatic conditions and conflict are at higher risk of high food prices and non-affordability.