Roughly 150 million children under age five are chronically undernourished worldwide, and nearly 43 million are acutely malnourished, meaning their bodies are actively wasting from lack of food. These numbers come from 2024 joint estimates by UNICEF, the World Health Organization, and the World Bank. While the figures have improved since the 1990s, progress has stalled and even reversed in the most fragile regions of the world.
The Scale of Child Hunger in 2024
Child hunger shows up in different ways, and the global numbers reflect that. In 2024, 150.2 million children under five were stunted, meaning their bodies had adapted to prolonged food deprivation by slowing growth. That’s 23.2% of all children in that age group. Another 42.8 million were wasted, a more immediately dangerous condition where a child becomes dangerously thin relative to their height. Of those, roughly 34 million cases qualified as severe acute malnutrition, the most life-threatening form.
Across 26 of the world’s worst nutrition crises, nearly 38 million children under five were acutely malnourished in the most recent reporting period, marking the sixth consecutive year of rising numbers in those regions. One in four children globally lives in what UNICEF classifies as severe food poverty, surviving on extremely limited diets with little nutritional variety.
Stunting Versus Wasting
These two terms describe different stages and types of hunger. Stunting is the result of chronic undernutrition over months or years. A stunted child may not look visibly starving but is significantly shorter than expected for their age. Their body has diverted energy away from growth to keep essential organs running. Stunting affects cognitive development, immune function, and lifelong earning potential.
Wasting is what most people picture when they think of starvation: a child who is dangerously thin, with visible ribs and wasted muscle. It develops more rapidly, often during food crises, droughts, or conflicts, and can kill within weeks if untreated. Severe wasting is diagnosed when a child’s weight-for-height falls extremely low or when swelling appears in both feet and legs, a sign the body’s proteins are critically depleted.
How Many Children Die From Hunger
In 2021, 4.7 million children under five died worldwide. Malnutrition was linked to roughly 2.4 million of those deaths, just over half. That doesn’t mean all 2.4 million children starved to death in the way most people imagine. Direct starvation accounted for about 97,000 deaths. The rest died from diseases like pneumonia, diarrhea, and measles that their malnourished bodies couldn’t fight off. Hunger weakens the immune system so severely that infections that would be survivable in a well-fed child become fatal.
The broader trend has improved significantly. In 1990, an estimated 6.6 million child deaths were linked to malnutrition. By 2021, that number had dropped to 2.4 million. But the pace of improvement has slowed, and in the hardest-hit countries, the situation is worsening.
What Drives Child Hunger
Three forces overlap in nearly every major child hunger crisis: inequality, armed conflict, and climate disruption. Conflict is the single biggest driver. In Somalia, where war, drought, and flooding converge, 63% of children live in severe food poverty. In the most vulnerable communities there, more than 80% of caregivers reported that their child had gone an entire day without eating. In the Gaza Strip, nine out of ten children were surviving on two or fewer food groups per day during assessments conducted between December 2023 and April 2024, after months of hostilities collapsed food and health systems.
Climate change compounds these crises by destroying harvests, killing livestock, and driving up food prices. Rising costs of living have pushed nutritious foods out of reach for hundreds of millions of families. The children who suffer most are typically in low-income countries that contributed the least to the emissions causing the problem.
What Starvation Does to a Child’s Body
The damage from prolonged hunger goes far beyond weight loss. In the brain, malnutrition reduces the number of neurons and the connections between them. It slows the growth of the protective coating around nerve fibers that allows signals to travel quickly. The outer layer of the brain thins. These changes lead to delays in motor skills, memory, and overall cognitive function. If a child remains malnourished past age three or four, much of this brain damage becomes permanent.
The immune system collapses as the thymus gland, lymph nodes, and tonsils shrink from lack of nutrients. This is why malnourished children die from common infections at such high rates. The lining of the intestines deteriorates, making it harder to absorb whatever food the child does receive, creating a vicious cycle. The heart muscle thins and weakens, reducing blood flow throughout the body. Breathing muscles lose mass, and the body’s ability to respond to low oxygen levels becomes impaired. Even after recovery, some of these effects linger for years.
Treatment Costs and Effectiveness
Severe acute malnutrition is treatable. The standard approach uses therapeutic food, a calorie-dense, nutrient-packed paste that doesn’t require refrigeration or cooking. A typical course of treatment runs about 50 days for children who recover, using roughly 147 sachets of therapeutic food at a cost of about $48 per child for the food alone. The total cost of treatment, including health worker visits and supplies, averages around $114 per child.
That figure is remarkably low for a life-saving intervention, yet funding consistently falls short of need. Millions of children with severe wasting never receive treatment because they live in areas without functioning health systems, or because the supply of therapeutic food doesn’t reach them in time.
Where Progress Stands
The world has made real gains against child stunting. The number of stunted children dropped from 180.4 million in 2012 to 150.2 million in 2024. But those gains are unevenly distributed. Sub-Saharan Africa and South Asia still carry the overwhelming majority of the burden, and acute malnutrition has risen for six straight years in the most fragile regions.
The UN’s 2030 goals for ending hunger are not on track. If current trends hold, an estimated 582 million people could still be chronically undernourished by 2030. Climate change alone could push 130 million additional people into poverty by that date, reversing decades of development progress. For children specifically, the combination of more frequent extreme weather events, ongoing conflicts, and rising food costs means the number at risk of starvation is likely to grow before it shrinks.