The Global Hunger Index (GHI) is a tool designed to comprehensively measure and track hunger globally, regionally, and by country. Each year, the International Food Policy Research Institute (IFPRI) calculates GHI scores in order to assess progress, or the lack thereof, in decreasing hunger. The four component indicators used to calculate the GHI scores draw upon data from the following sources: undernourishment (FAO), child wasting and stunting (UNICEF and WHO), and child mortality (UN). GHI scores are not calculated for some higher income countries where the prevalence of hunger is very low. The GHI is only as current as the data for its four component indicators.

Source: International Food Policy Research Institute