The GFO Guide to the Global Food System

How the World EatsThe global food system on one page

Around eight billion people eat every day. Someone grew that food, moved it, processed it and sold it. This guide explains how that works, and what makes it go wrong.

Free to read. Last reviewed 21 September 2026.

Engraved illustration of a globe surrounded by wheat, a soybean branch, a dairy cow, a salmon and a container ship
The global food system on one pageGFO system map: the chain from inputs to consumption, the flows from surplus to deficit regions through five chokepoints, and where GFO's six signal domains act. GLOBAL FOOD OBSERVATORY · HOW THE WORLD EATS · SYSTEM MAP The global food system on one page How food moves from field to plate, where it travels, and what disrupts it. 01 THE CHAIN Six stages, from inputs to the table 01 Inputs Seed, feed, fertiliser, energy, water, finance 02 Production Farms, ranches, fisheries, aquaculture 03 Processing Milling, crushing, slaughter, dairy, packing 04 Trade & logistics Traders, ports, shipping, storage 05 Retail & foodservice Supermarkets, restaurants, institutions 06 Consumption Households, diets, food waste Money flows back the other way 02 THE FLOWS Where food is grown, and where it is eaten SURPLUS REGIONS Grow more than they eat The Americas Grains, oilseeds, meat, sugar Black Sea Wheat, corn, sunflower oil European Union Dairy, pigmeat, wheat Oceania Dairy, beef, sheepmeat Southeast Asia Rice, palm oil, seafood DEFICIT REGIONS Eat more than they grow China & East Asia Soybeans, meat, feed grains Middle East & North Africa Wheat, dairy, feed Sub-Saharan Africa Rice, wheat, milk powder South Asia Edible oils, pulses Europe Soymeal, feed, tropical produce CHOKEPOINTS Where the main sea routes narrow Panama Canal Americas to Asia Bosphorus Black Sea grain exit Suez Canal & Red Sea Europe to Asia Strait of Hormuz Gulf food imports Strait of Malacca Indian Ocean to East Asia Disruption here travels fast. Some regions sit on both sides. The EU exports dairy and pigmeat but imports soymeal and feed. 03 THE FORCES What moves the system: GFO's six signal domains INPUTS PRODUCTION PROCESSING TRADE RETAIL CONSUMPTION Price How shocks travel from benchmarks to shelf prices Trade Tariffs, quotas, bans, deals and market access Supply Output, stocks and input availability Biosecurity Animal and plant disease, and the bans that follow Regulation Food safety, labels, residue limits, sustainability rules Climate Weather, water, heat, and river and canal levels Main point of impact Secondary impact Schematic, not to scale. Regional roles simplified. · GFO analysis · Last reviewed 21 September 2026
The system map. Each chapter of the guide takes one part of it and explains it in depth.Scroll sideways to see the full map.

What we mean by “the food system”

The phrase sounds abstract. It isn't.

The food system is everything and everyone involved in getting food from where it is grown to where it is eaten. Farmers and fishers. The companies that sell them seed, feed and fertiliser. The processors that mill, crush, slaughter and pack. The traders, shipping lines and ports that move it. The supermarkets and restaurants that sell it. The governments that regulate every step. And the households that buy it, cook it and throw some of it away.

Most people who work in food see one part of this clearly. A dairy farmer watches the milk price and the cost of feed. A supermarket buyer watches suppliers and shelves. An export agency watches markets and competitors. Each view is accurate. Each is partial.

This guide is about the whole.

The whole is large, and it has grown quickly. International trade in food and agricultural products rose from USD 400 billion in 2000 to USD 1.9 trillion in 2022 1.

It also still fails a great many people. Around 645 million people faced hunger in 2025, or 7.8% of the world's population 2.

Both facts are true at once. The system is enormously productive, and it is uneven.

Three ideas that explain most of it

1Food moves along a chain

Almost every food product passes through the same six stages.

It starts with inputs: seed, animal feed, fertiliser, energy, water and the finance to pay for them. Then production, on farms, ranches, fishing boats and fish farms. Then processing, which turns wheat into flour, soybeans into oil and meal, animals into meat, and milk into cheese and powder. Then trade and logistics, which store food and move it between regions and countries. Then retail and foodservice, where it is sold. Finally, consumption.

Money flows the other way. The price a shopper pays is divided, stage by stage, back down the chain to the farm and the input supplier.

Each stage adds cost and takes a margin. When prices change at one end, the effect travels along the chain, usually with a delay. A rise in fertiliser prices this year can show up in grain prices next year, and in meat and dairy prices after that.

2Food is not grown where it is eaten

Some parts of the world produce far more food than they consume. The Americas, the Black Sea region, the European Union, Oceania and parts of Southeast Asia are large net exporters of grains, oilseeds, meat, dairy, rice, palm oil or seafood.

Other regions cannot grow enough, because of limits on land, water or climate, or because their populations and incomes have grown faster than their farms. China and East Asia, the Middle East and North Africa, Sub-Saharan Africa and South Asia all depend on imports for important parts of their diet.

Trade connects the two. Most of it travels by sea, and the main sea routes narrow at a small number of chokepoints: the Panama Canal, the Bosphorus, the Suez Canal and Red Sea, the Strait of Hormuz and the Strait of Malacca.

Where the routes narrow

Major sea routes for food trade and the chokepoints they pass through.

Major food trade sea routes and chokepointsIndicative map of major sea routes for food trade and the chokepoints they pass through: Panama Canal, Bosphorus, Suez Canal, Bab el-Mandeb, Strait of Hormuz and Strait of Malacca, with the Cape of Good Hope as the detour route. Panama CanalPanama Canal BosphorusBosphorus Suez CanalSuez Canal Bab el-MandebBab el-Mandeb Strait of HormuzStrait of Hormuz Strait of MalaccaStrait of Malacca Cape of Good Hope: the long way roundCape of Good Hope: the long way round To East AsiaTo East Asia From the AmericasFrom the Americas Major sea routeMajor sea route Detour routeDetour route ChokepointChokepoint
Routes are indicative, not traced shipping lanes. South American exports to Asia also travel around the Cape of Good Hope. Suez and Bab el-Mandeb are shown separately because they can be disrupted separately.

Two details matter here.

First, many countries sit on both sides. The EU exports dairy and pigmeat but imports much of the soymeal it feeds to animals. China is one of the world's largest food producers and also one of its largest importers.

Second, most food is still eaten in or near the country that grew it. The traded share is smaller than the total. But the traded share is where world prices are set.

When a big importer buys more, or a big exporter sells less, prices move for everyone, including people who never buy imported food.

3Six forces move the system

At GFO we track the system through six signal domains. Almost every development worth watching falls into one of them.

  • PriceHow changes in benchmark prices travel through the chain to what farmers earn and consumers pay.
  • TradeTariffs, quotas, export bans, trade agreements and market access.
  • SupplyHow much is produced, how much is in storage, and whether inputs are available.
  • BiosecurityAnimal and plant diseases, and the trade bans that often follow them.
  • RegulationFood safety rules, labelling, residue limits and sustainability requirements.
  • ClimateWeather, water, heat, and the river and canal levels that shipping depends on.

The map above shows where each force acts on the chain. Price and Regulation reach almost every stage. Biosecurity is concentrated on farms, processing plants and trade.

Why the system breaks

Shocks rarely come from one force alone. The serious ones usually combine several.

When war disrupted Black Sea exports in 2022, it was a trade shock. It quickly became a supply shock, because the region is a major source of wheat, corn and sunflower oil. It was also an input shock, because energy and fertiliser prices rose at the same time. All three fed into price.

African swine fever in China followed a similar path. A disease outbreak cut domestic pig numbers, China bought more pork on world markets, and prices rose for pork buyers everywhere.

The system has buffers: stocks held in storage, alternative suppliers, and substitute foods. When buffers are healthy, it absorbs shocks well. When they are thin, a small disruption can produce a large price move. Much of GFO's work is watching how thick those buffers are.

Why buffers matter

The same shock, with different amounts of food in reserve.

Why buffers matterIllustrative comparison: the same supply shock causes a small price rise when stocks are high and a sharp price spike when stocks are low. Thick buffers Plenty in storage, other suppliers available Stocks Same shock Small rise Price over time Thin buffers Little in storage, few alternatives Stocks Same shock Sharp spike Price over time Illustrative only. Not based on a specific market or period.

What is changing

Demand is still growing, but its shape is changing.

The world population was 8.2 billion in 2024. The UN projects it will peak at around 10.3 billion in the mid-2080s 3.

Numbers are only part of it. Where the growth happens matters, and so does income. As households get richer they tend to eat more meat, dairy, fish and processed food, which require more feed, water and processing per calorie. Much of the future growth in food demand is expected to come from Africa and South Asia, while demand in China and much of Europe levels off.

Supply is shifting too. Climate change is altering which regions can grow what, and how reliably. Rules on sustainability, deforestation and emissions are changing what exporters must prove to reach certain markets. Neither shift is complete, and the full effects are not yet clear.

The chapters

Each chapter takes one part of the map and explains it in more depth. Read them in order or on their own.

Engraved illustration of a grain elevator and silos loading a railway wagon

Start here

Chapter 1: The moving parts

The six stages of the chain, who runs each one, what each is exposed to, and where the money goes.

Read Chapter 1
  1. 1The moving partsThe six stages of the chain, who operates them, and where the money goes.Read chapter
  2. 2Key categoriesGrains, oilseeds, meat, dairy, seafood, sugar, fruit and vegetables, and why each behaves differently.Read chapter
  3. 3Key marketsThe largest exporters and importers, and the swing players whose decisions move world prices.Read chapter
  4. 4Routes and chokepointsHow food physically moves around the world, and where it is most exposed.Read chapter
  5. 5What drives demandPopulation, income, cities, diets and policy, and what they point to over the next 25 years.Read chapter
  6. 6What causes shocks and shortagesThe six forces in detail, with the episodes that taught the market most.Read chapter
  7. 7How prices are setBenchmarks, futures, auctions, stocks and the role of freight and the dollar.Read chapter
  8. 8GlossaryThe terms the industry uses, in plain language.Read chapter

Sources