Protein-Energy Malnutrition
Global mortality data, country rankings, and trends for Protein-Energy Malnutrition from 1990 to 2021.
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Protein-Energy Malnutrition is a significant contributor to the global burden of disease. This page presents data from the Institute for Health Metrics and Evaluation (IHME) Global Burden of Disease Study, showing mortality trends, country rankings, and regional patterns. Understanding the epidemiology of protein-energy malnutrition helps inform public health interventions and resource allocation.
This data is sourced from the Institute for Health Metrics and Evaluation (IHME) Global Burden of Disease Study 2023, processed via Our World in Data. Values represent each cause's share of total deaths (%) unless otherwise noted. Explore related mortality data using the links below.
Protein-energy malnutrition (PEM) — encompassing severe acute malnutrition (wasting), chronic malnutrition (stunting), and underweight — is an underlying cause of approximately 45% of deaths in children under five, translating to roughly 2.4 million deaths per year. Severe wasting (marasmus and kwashiorkor) carries a case fatality rate of 30-50% without treatment. Stunting, while less immediately lethal, affects 149 million children globally and impairs cognitive development, educational attainment, and lifetime earnings. South Asia and sub-Saharan Africa bear the overwhelming majority of the malnutrition burden. Food insecurity, poverty, inadequate maternal nutrition, suboptimal breastfeeding, poor complementary feeding, and recurring infections are the proximate determinants. The 'double burden' of malnutrition — the coexistence of undernutrition and overweight/obesity within the same populations — is increasingly recognised as a defining challenge for nutrition policy.
Across 210 countries, protein-energy malnutrition accounts for an average of 0.4% of total deaths. Regional disparities are substantial: Sub-Saharan Africa has the highest regional average at 0.9%, while Europe & Central Asia records the lowest at 0.1% — a 9.6-fold difference that underscores the geographic inequality in protein-energy malnutrition mortality burden.
Community-based management of acute malnutrition (CMAM) using ready-to-use therapeutic food (RUTF) has dramatically improved survival from severe wasting. Exclusive breastfeeding for the first six months and appropriate complementary feeding are protective. Micronutrient supplementation, deworming, and management of childhood infections reduce the infection-malnutrition cycle. Social protection programmes (cash transfers, school feeding), agricultural diversification, and food systems strengthening address the structural determinants of malnutrition.