When the War Reaches the Checkout Line
How the conflict with Iran is reshaping the American supermarket — from one shelf to the next, while warships shuttle past the Strait of Hormuz
Linda Martinez stands in the cooking-oil aisle of a Kroger on the edge of Houston, holding two bottles of sunflower oil — one in each hand — and doing something that would not have crossed her mind three months ago: comparing the prices, penny by penny.
"I used to just toss it in the cart without looking," says Martinez, fifty-two, a nurse and a mother of three. "Now it feels like I'm trading stocks every time I come in here."
The U.S.–Israeli war against Iran, which began at the end of February, is being fought thousands of miles from these parking lots baking under the Texas sun. But from the shelves of American supermarkets, it no longer feels quite so far away.
The Numbers Behind the Cart
The FAO Global Food Price Index climbed to 128.5 points in March — a 2.4% jump from the previous month and the highest reading since the start of the year. The U.S. Department of Agriculture reports that food prices in March 2026 were 2.7% higher than in March 2025, and projects an overall 2.9% increase for all food in 2026.
Behind those percentages lies a narrow maritime corridor. The Strait of Hormuz — the artery through which roughly one-fifth of the world's oil flows — has been effectively shut since the start of the conflict. But the real shock is unfolding elsewhere. About one-quarter of the world's fertilizer production also passes through Hormuz, and the price of urea jumped 19% in a single week across the Middle East.
"When fertilizer gets expensive, everything gets expensive. There's a very strong correlation between the movement of energy prices and the movement of food prices." — Dr. Ricky Volpe, agricultural economist, Cal Poly
Which Foods Climbed the Most
Sugar is the great unexpected loser. In March, the sugar price index jumped 7.2% month over month — the steepest rise across all food categories. The increase was driven largely by higher international crude oil prices, which raised expectations that Brazil, the world's largest sugar exporter, will lean more heavily on sugarcane-based ethanol production.
Vegetable oils are the second category to show a sharp rise. Palm oil reached its highest level since mid-2022 and surpassed soybean oil. Sunflower oil — still suffering from disruptions to Ukrainian exports that began in 2022 — has become almost a luxury item.
What Disappeared, and What Is Gathering Dust
In supermarkets along the American coasts, the absences are becoming more visible. Ryan O'Connell, manager of an independent grocery store in Cleveland, describes how the shopping profile has shifted since March. "People are buying rice in twenty-pound bags, not little packets. Same with flour. Toilet paper — it's started again. It's like everyone remembered COVID and decided to get ahead of the panic this time."
In his store, what is gathering dust — ironically — is precisely the kind of product that used to define middle-class normalcy: avocados, frozen seafood from Southeast Asia, ready-made sushi platters, exotic fruit. "Nobody's buying mangoes right now. People are going back to apples, potatoes, onions. We're winding back to basics."
Ready-to-eat meals — a category that boomed during the pandemic — are selling more slowly. When every dollar counts, consumers return to raw ingredients and home cooking. Potatoes, rice, beans, oats — they are flying off the shelves faster than ever.
"I'm watching the grocery basket travel back in time. Like a store from the eighties." — Ryan O'Connell
The Political Shadow
This price climb is not a technical question — it is a political one. A two-year-old memory keeps Washington awake at night: Donald Trump won reelection in 2024 by hammering at the high cost of eggs, bacon, and other grocery staples. Now he and the Republican Party may face even higher food prices as they try to hold control of Congress in this year's midterm elections. Democrats are looking to capitalize on the surge by pinning it on Trump's decision to go to war, while Republicans pick their words carefully, downplaying economic forecasts for higher fuel and fertilizer costs.
In Houston, Linda Martinez is not talking about elections. She is talking about her Kroger bill, which six months ago was around $180 and which last week came to $237.
"The war used to sound like something happening somewhere else," she says. "Then it started sounding like the price of meat. Now it sounds like whether there'll be chicken in my freezer next week."
What Could Come Next
Experts warn that the worst may still be ahead. "Food crises do not begin with empty grocery store shelves. They begin when key agriculture inputs are limited and farmers shift their decision-making about planting for the next harvest." One month into the war, the Strait of Hormuz remains closed — and while policymakers focus on oil, the deeper blow is creeping quietly across farm fields.
In America, it will not look like hunger. It will look like a smaller cart, a simpler dinner, one shelf that keeps staying half-empty, and one item on another shelf that no one is buying. The war has arrived at the checkout line. The question now is how long it will stay.
Sources: FAO World Food Situation Report (April 2026); U.S. Department of Agriculture (USDA); Council on Foreign Relations; Fortune; Business Insider; CNBC; NPR; Foreign Policy; World Food Programme; The National.