Malnutrition

SDG 2 — Zero hunger

Malnutrition is not only about not having enough to eat. It takes two opposite forms that are increasingly coexisting in the same countries. At one extreme, hundreds of millions of children do not get the nutrients their bodies need to grow and develop. At the other, billions of adults consume more calories than they need, but far fewer nutrients — fueling an epidemic of chronic disease. Both forms are driven by the same underlying failure: food systems that do not deliver nutritious, affordable, accessible food to the people who need it most.

150 million

children under five are stunted globally in 2024, with stunting causing irreversible damage to cognitive development and lifetime earnings (World Bank / UNICEF 2025)

70%

of all deaths globally are due to non-communicable diseases linked to poor diet and lifestyle

$3.5 trillion

the estimated annual cost of undernutrition and micronutrient deficiencies to the global economy (World Bank)

Hunger and obesity are both symptoms of the same broken system: one that produces and distributes food in ways that leave billions without access to adequate nutrition. In low-income countries, families facing poverty are pushed toward cheaper, calorie-dense options, often ultra-processed foods, because fresh produce, protein, and quality ingredients are simply too expensive or unavailable. The result is a paradox: people eating enough calories but starving for nutrients. In wealthier countries, the challenge is different but deeply structural: ultra-processed food dominates supermarket shelves, is heavily marketed, and is designed to be as palatable and habit-forming as possible. Whole neighborhoods in cities across the US, UK, and beyond lack a single supermarket with fresh produce, surrounded instead by fast food chains and convenience stores. Changing what people eat is not simply a matter of education or willpower. It requires changing what is grown, what is subsidized, what is marketed, what is affordable, and what is physically available, all at once.

Each dimension of malnutrition affects different populations in different ways. Pick the one your team wants to dig into, then take it to your worksheet.

Child undernutrition

150 million children under five are stunted, with irreversible effects on brain development, learning, and lifetime opportunity, concentrated in sub-Saharan Africa and South Asia

Ultra-processed food

Industrially formulated products now make up more than half of daily calories in many countries, engineered to be cheap, convenient, and habit-forming, at the cost of nutritional value

Access to nutritious food

For billions of people, eating well is not a choice — it is a question of what they can afford, what is sold near them, and what food systems make available

Obesity and chronic disease

Poor diet is now the leading risk factor for preventable death globally, driving epidemics of heart disease, diabetes, and cancer that burden individuals and health systems alike

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