Abstract
ObjectivesFollowing its publication in 2008, the Global Nutritional Index (GNI) which captures the triple burden of malnutrition, has been updated to assess the overall nutritional status and nutritional trends of countries, regions and the world, including both under-nutrition and over-nutrition.MethodsThe GNI was modeled on the Human Development Index, using geometric means of three normalized indicators: protein-energy malnutrition (PEM, measured by Disability-Adjusted Life Years (DALYs) from PEM), micronutrient deficiency (MID, measured by DALYs from MID), and penalizing obesity (percent female obesity). GNI (range 0–1) was calculated from 1990–2015 for 186 countries, in seven World Bank income and WHO region groupings.ResultsWorld GNI increased from 0.433 to 0.473 as decreased deficits overcompensated for the rise in obesity. GNI for African low- and middle-income countries (LMIC) (median 0.301 to 0.392) and South-East Asian LMIC (0.456 to 0.564) improved significantly (P<0.001), while for high-income countries (0.657 to 0.611) worsened significantly (P<0.001). GNI for American LMIC (0.459 to 0.457), European LMIC (0.571 to 0.575), Eastern Mediterranean LMIC (0.484 to 0.483) and Western Pacific LMIC (0.433 to 0.494) were unchanged. The disaggregation of the GNI showed that in nearly all the seven country groups there was a significant decrease in both PEM and MID (all P<0.01) (except in HIC where only PEM dropped), and a significant increase in obesity (all P<0.001).ConclusionThese trends are the result of the reciprocal changes between decreased under-nutrition and increased over-nutrition, which has become a major cause of malnutrition worldwide. We suggest, therefore, that future Sustainable Development Goals should include alongside “zero hunger”–“reduce obesity”.
Highlights
The United Nations has declared 2016–2025 to be the Decade of Action on Nutrition
The Global Nutritional Index (GNI) was modeled on the Human Development Index, using geometric means of three normalized indicators: protein-energy malnutrition (PEM, measured by Disability-Adjusted Life Years (DALYs) from PEM), micronutrient deficiency (MID, measured by DALYs from MID), and penalizing obesity
The disaggregation of the GNI showed that in most the seven country groups there was a significant decrease in both PEM and MID, and a significant increase in obesity
Summary
To enable prioritization for such Action, the state of world malnutrition and its trends requires monitoring information concerning the triple burden of malnutrition–undernourishment (too little energy intake), micronutrient deficiency (vitamin and mineral deficiencies, so-called “hidden hunger”) and obesity (excess energy intake). The Global Nutritional Index (GNI) was introduced in 2008 to capture this triple burden of malnutrition (both deficiency and excess), as it was the only index to penalize a country for obesity [4]. The GNIs’ trends and their disaggregation have demonstrated the overall nutritional status, and the main nutritional issues of individual countries, regions and the world, which are needed by nutritionists, public health professionals and policy makers alike
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