Food and Water Security
The fragility underneath modern abundance. The chokepoints in global food and water supply. The pressures the next decade will test.
(7.8%, about one in thirteen; nearly 40 million fewer than in 2024; UN Food and Agriculture Organization)
(plus about 60% of sunflower oil exports; the war exposed how concentrated the supply is)
(including parts of the US Great Plains, northwest India, and 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 extremely 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 overall picture - what is robust, what is actually at risk, and what the next decade will probably test - without either alarmism or complacency.
How robust the global food system 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 though it is rarely recognized as such.
What makes it work. Roughly 1.5 billion hectares of cropland produce more than enough calories to feed everyone (if calories were distributed efficiently, which they are not). The "Green Revolution" that began in the 1960s spread new wheat and rice varieties, fertilizer, and irrigation through much of the developing world, and world cereal yields have roughly tripled since 1961. 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 (sugarcane, maize, rice, wheat, potatoes, soybeans, oil palm, sugar beet, and cassava) account for about two-thirds of the world's crop production, according to the UN Food and Agriculture Organization (FAO). 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 supply more than a quarter of global wheat exports, about 60% of global sunflower oil exports, and significant shares of corn and barley. Both countries are also major fertilizer producers. The war disrupted Black Sea shipping for months, damaged Ukrainian agricultural infrastructure, unsettled fertilizer markets, and triggered the worst food-price spike since 2008 in many import-dependent countries.
What the spike actually did. World wheat prices, already rising in 2021, peaked in May 2022 at nearly double their mid-2021 level before settling back. Hunger had already risen by about 150 million people during the pandemic, by the UN's count. 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. In 2026 the route was disrupted again: by August, grain shipments through the Bosphorus were down 40% on a year earlier, the World Food Programme said.
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 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 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 more concerning than the food story for the next several decades; the World Meteorological Organization reports that 2025 was one of the driest years for river flows in 35 years. The reasons compound.
Groundwater depletion. About a quarter of irrigation water worldwide comes from groundwater (aquifers), by the UN's estimate. 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, and the aquifers under Saudi Arabia. So are the groundwater systems of Australia's Murray-Darling basin, where over-allocation of surface water is the better-known half of the problem. The North China Plain shows the trend can be reversed: after water transfers and pumping limits, its groundwater levels have risen since 2020, passing their 2005 level in 2024. Once an aquifer is depleted, it can take centuries or millennia to refill, and in some cases the aquifer itself is permanently damaged (subsidence, salinization). 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.
Shipping chokepoints. Roughly 80% of global trade by volume moves by sea. In normal times the Strait of Hormuz carries oil equal to about 20% of global consumption, more than a quarter of seaborne oil trade, a fifth of liquefied natural gas trade, and a third of fertilizer trade. Since March 2026, in the war that followed US and Israeli strikes on Iran, traffic has been restricted: about 4 ship transits a day in September, against 85.5 in 2025 (IMF PortWatch). The Strait of Malacca carries roughly 30% of global trade by volume and dominates Asian-bound shipping. The Suez Canal normally carries about 12% of global trade, and the Red Sea route to it has been heavily affected by Houthi attacks since 2023. The Panama Canal, which rationed transits in a 2023-24 drought, began cutting them again in September 2026, citing low rainfall and El Nino. The Bosphorus and Dardanelles, and a long list of secondary points, carry the rest. Disruption at any of these has visible global effects within weeks.
Crop concentration. The nine crops mentioned earlier make up about two-thirds of crop output. Within those, the regional concentration is sharper - the United States, mainly its Corn Belt, grows roughly a third of global maize; India and Pakistan, mostly on the Indo-Gangetic plain, grow about a sixth of global wheat; and Brazil ships about 60% of globally traded soybeans. A serious disruption (drought, disease, war) in any of these specific regions has outsized global consequences. The Ug99 wheat stem-rust strain, first detected in Uganda in 1998, has spread through eastern and southern Africa to Yemen, Iran, and Egypt, and is one of the closely monitored agricultural threats.
Fertilizer supply. Modern agriculture depends on industrial fertilizers. Roughly half of all nitrogen in human food comes from synthetic fertilizer 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 fertilizer-price spike (due to gas prices and the war) showed how quickly modern agriculture can be disrupted by fertilizer-supply problems. After Hormuz traffic was restricted in 2026, the World Bank's Middle East urea price rose from $472 a tonne in February to $857 in April, then fell to $390 by August.
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 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 reaches the food supply within days, well before it reaches most other essentials. The thinness of Africa's cold chain is one of the major limits on food security in many of its countries; in rich countries the cold chain is taken for granted but is itself a complex infrastructure that can fail.
How country food security 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 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
Dated September 2026, with Hormuz traffic restricted since March, Black Sea grain exports disrupted again, and a very strong El Nino expected to last into early 2027. 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 adequacy of global agriculture is real: hunger fell in 2025, and in August 2026, despite the Hormuz shock, the FAO Food Price Index was 2.5% above a year earlier. The climate and geopolitical pressures making local disruptions more frequent are also real; the strengthening El Nino is the next test. 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 likely over the long run in some regions; the question is timing and policy. The Ogallala had lost about 9% of its stored water by 2015, with water levels down more than 200 feet in some wells, while the North China Plain shows depletion can be reversed. The crisis is gradual rather than sudden and has been visible for decades; the policy response has been slow in most places.
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 and partly on whether the productivity gains keep ahead of the climate-driven losses. Regulation varies: the EU is stricter on genetically modified crops than the US or much of Asia, though from 2028 it will treat simpler gene-edited plants as conventional.
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. Ethiopia opened the Grand Ethiopian Renaissance Dam in September 2025 without an agreement with Egypt and Sudan. India has held the Indus Waters Treaty "in abeyance" since an April 2025 attack in Indian-administered Kashmir and rejects an August 2026 ruling by a court in The Hague that the treaty remains in force. Chinese damming of the upper Mekong is a further tension point. Whether any of these reaches actual conflict depends on choices by specific governments. The probability is meaningful but not high.
The base case is continued aggregate adequacy with rising volatility. Aquifer depletion and climate stress intensify gradually; agricultural technology helps at the margin. Major water conflict 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 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 (Arizona State University, satellite mapping of groundwater loss), and a body of hydrological research on aquifer depletion. The data on groundwater depletion is robust; policy responses have mostly lagged the problem, with North China a notable exception.
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. That 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-prioritized 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 (founder of Gro Intelligence), parts of the World Food Programme analysis, and a strand of food-security analysis emphasizing trade and political-economy dimensions. The 2022 wave of export bans (India's wheat ban was fully lifted only in 2026) and the 2026 disruptions of Gulf fertilizer and Black Sea grain shipments support the framing.
What the available evidence supports: the global food system is adequate in aggregate but fragile in places, and water is among the hardest medium-term constraints. Climate change is reshaping where food can be produced. Food waste is mathematically large but politically hard to address. Geopolitical fragmentation, underlined by the disruptions of 2026, is a serious 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 is projected to worsen 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 may not be 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 long-run tailwinds. Companies in irrigation efficiency, drought-resistant seeds, alternative proteins, water utilities, and agricultural technology may see 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 long-run pressures point.
If you are thinking about food choices
The water and land footprint of different foods varies enormously. Per calorie, beef and lamb use roughly 25 to 90 times the land of plant proteins such as pulses, groundnuts, or tofu; dairy is in the middle, and pork and chicken use less than a tenth of beef's land. Water ranks differently: per calorie, dairy and pork draw more fresh water than beef (Poore and Nemecek, 2018). 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:
