Food and Water Security
The fragility underneath modern abundance. The chokepoints in global food and water supply. The structural pressures the next decade will test.
(roughly one in eleven; up about 150 million from 2019)
(plus around 70% of sunflower oil; the war exposed how concentrated the supply is)
(includes parts of the US Midwest, Indo-Gangetic plain, North China plain, Saudi Arabia; exact "overdraft" share varies by methodology)
A note on framing. Food and water are among the topics where modern abundance can mask underlying fragility. The systems that produce, move, and store the world's food and water work astonishingly well most of the time and are concentrated in ways that make them vulnerable to specific kinds of disruption. The page below tries to walk through the structural picture - what is robust, what is genuinely at risk, and what the next decade will probably test - without either alarmism or complacency.
How robust the global food system actually is
The global food system has succeeded at something remarkable over the last 60 years. Despite the world's population roughly tripling since 1960, the share of humans facing chronic hunger has fallen substantially. Food prices in real terms are lower today than at most points in human history. The variety of food available to ordinary consumers in rich and middle-income countries would have been unimaginable to royalty in 1900. The system that delivers a global supermarket to most countries in the world is one of the largest cooperative achievements in human history, even when it is rarely recognised as such.
What makes it work. Roughly 1.5 billion hectares of cropland produce enough calories to feed humanity multiple times over (if calories were distributed efficiently, which they are not). The "Green Revolution" of the 1960s-1980s tripled grain yields in much of the developing world through new wheat and rice varieties, fertilizer, and irrigation. Modern global trade moves food to where it is needed: Asia and Africa import substantial calories from the Americas and Australia. Refrigeration, packaging, and logistics technologies allow perishable food to reach distant markets. Supply chains are extraordinarily efficient compared to any historical baseline.
What this also means. The system that delivers this abundance has become increasingly concentrated. Just nine crops (wheat, rice, maize, soybeans, sugarcane, potatoes, cassava, palm oil, and barley) produce about half of all calories consumed globally. A small number of countries dominate exports of specific staples - the US, Argentina, and Brazil for soybeans; the US, Argentina, Russia, Ukraine, France, Australia, and Canada for wheat; Indonesia and Malaysia for palm oil. Disruption to specific producing regions or specific shipping routes can produce supply shocks far beyond their direct geographic reach.
The Russia-Ukraine war and what it exposed
The 2022 Russian invasion of Ukraine produced the most visible recent test of how concentrated and vulnerable the food system is. Together, Russia and Ukraine produce roughly 25% of global wheat exports, about 70% of global sunflower oil exports, and significant shares of corn and barley. Both countries are also major fertiliser producers. The war disrupted Black Sea shipping for months, damaged Ukrainian agricultural infrastructure, sanctioned Russian fertiliser exports, and triggered the worst food-price spike since 2008 in many import-dependent countries.
What the spike actually did. Wheat prices roughly doubled in the first months of the war before settling back over time. Global hunger rose by about 150 million people compared to pre-war baselines. Several import-dependent countries - Egypt, Lebanon, Tunisia, Yemen, parts of Sub-Saharan Africa - faced serious food crises. The Black Sea Grain Initiative (negotiated by the UN and Turkey) restored partial Ukrainian exports. By 2024 the immediate price spike had subsided but underlying vulnerabilities had been exposed.
What it taught. The food system has resilience that is impressive at the global aggregate level (no major famines from the war specifically) and is fragile at the regional and country level (specific import-dependent populations faced acute hardship). Concentration of production matters - countries depending on imports from a small number of suppliers are structurally exposed to those suppliers' political conditions. Stockpiles and strategic reserves are useful buffers but have been declining in many countries. Food security is not just about total global calories; it is about which countries can reliably access those calories at affordable prices.
Water: the deeper structural concern
Water is more fundamental than food because food production depends on water - roughly 70% of all freshwater used by humans goes to agriculture. The water story is structurally more concerning than the food story for the next several decades. The reasons compound.
Groundwater depletion. About a third of global irrigation water comes from groundwater (aquifers). Several major aquifers are being pumped faster than they recharge - the Ogallala under the US Great Plains, the Indo-Gangetic aquifer under northern India and Pakistan, the North China Plain aquifer, the aquifers under Saudi Arabia, the Murray-Darling basin in Australia. Once an aquifer is depleted, it can take centuries or millennia to refill, and in some cases is structurally compromised by the depletion (subsidence, salinisation). The crops that depend on these aquifers will eventually need a different water source, a different crop, or to stop being grown there.
Climate-driven precipitation changes. Most climate models project that precipitation patterns will become more variable, with both wetter wet seasons and drier dry seasons in many regions. Agricultural systems that have adapted to historical patterns will need to adapt again, often in places with limited resources to do so. Specific regions (Southwest US, parts of South Asia, parts of southern Europe, the Sahel, the Andes) face particularly difficult adjustments.
River-system stress. Major rivers that support hundreds of millions of people (Tigris-Euphrates, Mekong, Indus, Brahmaputra, Yellow, Colorado, Rio Grande) face combinations of upstream damming, climate-driven flow changes, and rising demand from agriculture, cities, and industry. Each of these rivers is already over-allocated in some sense; the next decade will test how the trade-offs are managed politically.
Saltwater intrusion. Rising seas plus over-extraction of coastal groundwater is producing saltwater intrusion that contaminates freshwater supplies in coastal regions including Bangladesh, Vietnam's Mekong Delta, parts of California, parts of Florida, and many island states. Once an aquifer is contaminated with saltwater, it is difficult or impossible to restore.
The chokepoints in global food and water
Specific concentrated points in the system carry disproportionate risk. Listing them is useful for thinking about where attention belongs.
Shipping chokepoints. Roughly 90% of global trade by volume moves by sea. Specific maritime chokepoints carry concentrated risk: the Strait of Hormuz (~25% of global oil and a substantial share of liquefied natural gas), the Strait of Malacca (~30% of global trade by volume, dominant for Asian-bound shipping), the Suez Canal (~12% of global trade), the Bab el-Mandeb / Red Sea route (heavily affected by Houthi attacks since 2023), the Panama Canal (drought-affected since 2022, restricting transit numbers), the Bosphorus / Dardanelles, and a long list of secondary points. Disruption at any of these has visible global effects within weeks.
Crop concentration. The nine staple crops mentioned earlier produce about half of all calories. Within those, the regional concentration is sharper - the US Corn Belt produces roughly a third of global maize, the Indo-Gangetic plain produces about a fifth of global wheat, parts of Brazil and Argentina produce most globally-traded soya. A serious disruption (drought, disease, war) in any of these specific regions has outsized global consequences. The Ug99 wheat-rust strain has been moving slowly westward from East Africa for two decades and is one of the closely-monitored agricultural threats.
Fertiliser supply. Modern agriculture depends on industrial fertilisers. Roughly half of all nitrogen in human food comes from synthetic fertiliser produced through the Haber-Bosch process, which depends on natural gas. Phosphorus comes mostly from rock phosphate concentrated in Morocco, China, and a few other countries. Potassium comes mostly from Canada, Russia, and Belarus. The 2022 fertiliser-price spike (due to gas prices and Russian sanctions) showed how quickly modern agriculture can be disrupted by fertiliser-supply problems.
Seed concentration. Roughly four companies (Bayer-Monsanto, Corteva, ChemChina-Syngenta, BASF) control the majority of the global commercial seed market. The genetic diversity of major crops has narrowed substantially as commercial varieties have replaced traditional landraces. The combination produces efficient agriculture and structural vulnerability to whatever disease or pest the dominant varieties prove susceptible to. The Cavendish banana - a single global variety facing a fungal disease that may collapse the commercial industry - is the most-cited example.
Cold chain dependence. Modern food systems depend on continuous refrigeration. Power grid disruption affects food supply faster than most people realise. Africa's continuing cold-chain investment is one of the major food-security limiters in many countries; in rich countries the cold chain is taken for granted but is itself a complex infrastructure that can fail.
How country food security actually compares
Food security varies dramatically across countries depending on income, climate, agricultural capacity, and trade exposure. The numbers below are rough.
The takeaway: food security in 2026 is structurally adequate at the global aggregate level and meaningfully fragile at the country and regional level. The countries with the worst situations are typically experiencing conflict, climate stress, governance failure, or some combination. The countries with the most exposed positions for the next decade are those that depend heavily on imports of staples from a small number of suppliers in politically volatile regions.
The paths from here
Food and water security trends over the next two decades will be shaped by climate, geopolitics, agricultural technology, and political choices. Each path below is one realistic shape the period could take.
Continued aggregate adequacy with rising volatility
Global food and water systems continue to deliver enough at the aggregate level. Specific years and specific regions experience more severe disruptions than the historical baseline. The number of acute food-insecurity events rises modestly. Prices show more volatility than the 1990-2010 period of relative stability.
Will it happen? This is the base case. The structural adequacy of global agriculture is real; the climate and geopolitical pressures making local disruptions more frequent are also real. The most likely outcome is muddling through with worse years and better years, rather than systemic breakdown.
A serious aquifer crisis in a major producing region
One or more of the world's heavily-depleted aquifers (Ogallala, Indo-Gangetic, North China Plain) reaches a state where major agricultural regions can no longer be irrigated as they have been. Crop production in those regions falls substantially. Global supply tightens; prices rise; specific dependencies are exposed.
Will it happen? Some version is locked in over the long run; the question is timing. The Ogallala has lost more than 30% of its volume since 1950 in some areas. North Chinese groundwater levels have fallen tens of metres. The crisis is gradual rather than sudden and has been visible for decades; the political response has been chronically inadequate.
Climate-driven agricultural relocation
As historical agricultural regions experience climate stress, production gradually relocates to new regions that climate change makes more suitable. Russian and Canadian agriculture expands northward. Some current major producers see substantial reductions. The geographic pattern of global food production by 2060 looks meaningfully different from today.
Will it happen? Slowly and unevenly. Some northward expansion is happening. The transition is constrained by soil conditions (newly-thawed permafrost is poor agricultural soil), infrastructure, and the economics of agricultural relocation. The full geographic shift will take decades and will be uneven.
A second Green Revolution
Genetic engineering, precision agriculture, alternative proteins, vertical farming, and other agricultural technologies produce another major productivity gain comparable to the Green Revolution. Yield per hectare rises. Water-use efficiency improves. The global food system absorbs population growth and climate stress without the worst projected outcomes.
Will it happen? Some specific technologies are advancing. CRISPR-edited crops, drought-resistant varieties, and improved alternative proteins are real and growing. Whether they collectively produce a Green-Revolution-scale gain depends partly on regulatory environments (which vary - the EU is more restrictive on GM than the US or much of Asia) and partly on whether the productivity gains keep ahead of the climate-driven losses.
Major conflict over water resources
Tensions over shared water resources (Tigris-Euphrates, Mekong, Indus-Brahmaputra, Nile, Jordan) escalate into more serious conflicts than have so far been seen. The combination of climate stress, upstream damming by major powers (especially China and Turkey), and growing downstream demand makes the political economy of trans-boundary water increasingly unstable.
Will it happen? Possible. The Grand Ethiopian Renaissance Dam dispute over the Nile, the upstream Chinese damming of Mekong tributaries, and the India-Pakistan Indus Waters Treaty stress have all been visible tension points. Whether any of these reaches actual conflict depends on choices by specific governments. The probability is meaningful but not high.
Strategic agricultural reserves expand
Countries and regional groupings respond to recent volatility by rebuilding strategic food reserves at much higher levels than the post-1990s deregulation reduced them to. China's existing massive reserves are joined by EU, Indian, African Union, and other state-managed reserves. The system becomes more resilient to short-term shocks but more politically managed.
Will it happen? Already partly happening. China's reserves are substantial. The EU has discussed strategic reserves. African countries have been investing in regional grain reserves. The full version - extensive strategic-reserve infrastructure across most major economies - is consistent with the broader move toward more politically-managed food and energy systems.
Alternative proteins become a meaningful share of supply
Plant-based meat alternatives, cultivated meat, fermented proteins, and insect protein collectively reach 10-20% of global protein consumption by 2040. The water and land footprint of meat production declines. Greenhouse gas emissions from livestock fall. The global food system becomes structurally less resource-intensive.
Will it happen? Pieces are happening. Plant-based meat has plateaued in growth in some markets after early enthusiasm. Cultivated meat has reached limited commercial sale. The technology is real but the consumer adoption has been slower than the technology trajectory would predict. Whether it scales depends substantially on price (cultivated meat is currently far more expensive than conventional meat) and on cultural acceptance, both of which are progressing slowly.
The realistic forecast is, again, a mix. The base case is continued aggregate adequacy with rising volatility (path 1). Aquifer depletion (path 2) and climate stress (path 3) intensify gradually. Strategic reserves (path 6) expand. Agricultural technology (path 4) helps at the margin. Alternative proteins (path 7) grow but more slowly than enthusiasts predict. Major water conflict (path 5) is a real but lower-probability tail. The food and water systems will probably remain functional for the foreseeable future, with periodic local crises and steady underlying pressure.
Where serious analysts disagree
Food and water security is one of those topics where careful analysts can read similar data and reach different conclusions. Each reading below is held by named scholars worth engaging directly.
The global food system is more resilient than alarmist framings suggest
The "imminent food crisis" framings have been wrong for over fifty years. Population is rising slower than predicted. Yields keep increasing. Trade keeps allowing surplus regions to feed deficit regions. Specific local crises happen and matter; aggregate global crises have not arrived despite repeated predictions. The realistic outlook is continued adequacy at the aggregate level with specific regional problems that need targeted responses, not systemic breakdown that needs panic.
Held by: the FAO mainstream view, Hannah Ritchie (Our World in Data), and most working agricultural economists. The historical record supports them strongly; the question is whether the 2020s are different in ways that change the trajectory.
Water is the binding constraint and is being chronically underweighted
The food-security conversation has been historically biased toward calorie production and away from water adequacy. Water is the harder problem because it is fundamentally local (you cannot ship water across continents the way you can ship grain). The aquifer-depletion problem alone may be the largest under-discussed structural issue facing major agricultural regions. Without much more serious water-policy reform, the food system the world has built may not survive on its current geographic footprint.
Held by: Jay Famiglietti (UC San Diego, GRACE satellite groundwater work), and a body of hydrological research on aquifer depletion. The data on groundwater depletion is robust; the policy response has been chronically inadequate to the scale of the problem.
Climate change will reshape agriculture more than the FAO models project
Standard projections of climate impacts on agriculture extrapolate from historical responses to weather variation, which underweights the possibility of regime shifts (sustained drought, repeated heat events, ecosystem changes) that have no historical analogue. The real climate impact on agriculture by 2050 may be substantially larger than the central projections suggest, with implications for which regions can produce food and at what cost.
Held by: Tim Lenton (Exeter), parts of the climate-tipping-point research community, and a strand of climate-and-agriculture analysis. The case is forward-looking and necessarily uncertain; the underlying logic about regime shifts has substantial support in earth-system science.
Food waste is the under-addressed leverage point
Roughly a third of all food produced globally is wasted - lost in supply chains in poor countries, thrown out at the consumer end in rich countries. Reducing food waste, even modestly, is mathematically the largest single intervention available to feed more people without producing more food. The political and infrastructure work to actually reduce waste has been chronically under-prioritised relative to its potential.
Held by: the World Resources Institute's food-loss research, the Project Drawdown analysis, and a substantial body of food-systems work. The case is well-supported; the practical policy interventions have been harder than the analysis would suggest.
Geopolitical fragmentation is the most consequential near-term risk
The food and water systems depend on global cooperation, trade openness, and stable supply relationships. The post-2020 fragmentation trend - export bans during shortages, food-as-weapon strategies, and the breakdown of multilateral food-policy coordination - is the single largest near-term threat to food security. The technical capacity to feed everyone exists; the political-economic structure that distributes the food is becoming more fragile.
Held by: Sara Menker (Gro Intelligence), parts of the World Food Programme analysis, and a strand of food-security analysis emphasising trade and political-economy dimensions. The 2022 wave of export bans (rice from India, wheat from several countries, sugar from various producers) supports the framing.
None of these readings is fully right or wrong. What can be said from the available evidence: the global food system is structurally adequate but increasingly fragile; water is the deepest medium-term constraint; climate change is reshaping where food can be produced; food waste is mathematically large but politically hard to address; and geopolitical fragmentation is the under-priced near-term risk. The cumulative picture is one of muddling through rather than crisis or success, with specific local stresses worth taking seriously even when the global aggregate looks fine.
What this means for you
Food and water touch everyday life through prices, availability, and the broader stability of the systems that ordinary life depends on. A few practical observations:
If you live in a rich country
Your food security is structurally strong. The realistic risks are price volatility (which has measurable effects on lower-income households more than middle-income ones), occasional supply disruptions for specific items, and longer-run climate-driven shifts in what is grown where. Maintaining a basic two-week pantry of shelf-stable staples is prudent for power outages and supply disruptions; treating food security as a near-term personal-survival concern is overweighted relative to the actual risk.
If you live somewhere water-stressed
Increasing parts of the US (Southwest, parts of Texas and California), parts of Mediterranean Europe, parts of the Middle East and South Asia, and parts of Australia face water stress that will get worse over decades. If you are choosing where to live for the long term, water exposure is now a real variable. Property values in water-stressed regions face risks that are not yet fully priced in.
If you live in an import-dependent country
Egypt, Lebanon, parts of North Africa and the Caribbean, the Gulf states, and several other countries face structural exposure to global food-supply disruptions. Government strategic reserves, diversified import sources, and food-security planning all matter. Voting on food and trade policy on the merits, rather than on the political symbolism, has direct effect on how exposed your country is to the next global shock.
If you invest
Agriculture, water infrastructure, and adjacent sectors have specific structural tailwinds. Companies in irrigation efficiency, drought-resistant seeds, alternative proteins, water utilities, and agricultural technology are positioned for sustained demand growth. Companies heavily exposed to water-scarce production regions face risks that may be under-priced. None of this is investment advice; it is observing where the structural pressures point.
If you are thinking about food choices
The water and land footprint of different foods varies enormously. Beef has roughly 20 times the land and water footprint of equivalent calories from plant-based protein; lamb is similar. Dairy is in the middle. Pork and chicken are substantially lower than beef. Plant-based protein is by far the lowest. Whether to act on this is a personal choice. The data is not a moral claim; it is a description of what the global food and water system actually requires for different products. Most realistic improvements in food-system sustainability come from collective dietary shifts at the margin rather than from full conversion of any specific population.
The mechanics behind this
The food and water story sits on top of three deeper mechanisms covered elsewhere on this site. If the analysis above depends on ideas you want to understand first, these fundamentals make the conversation more legible:
