The package stayed familiar. The food changed.

In a factory, change control is the paperwork that records every revision to a product. On the shelf there is none. The name, the logo and the price band carry over, and the revision is found later by a court, a consumer agency or someone reading the ingredient list.

The size is the revision people notice. Between 2021 and 2023, 29.6% of the grocery items Statistics Canada tracks for package size got smaller at least once, and 77.6% of the size cuts were on name brands C13. The formula is the revision they do not.

Revisions made for cost

From January 1980, Coca-Cola let its US bottlers replace half the sugar in its syrup with high-fructose corn syrup, a cheaper sweetener. By November 1984 the syrup contained no sugar at all. The dates are recorded in a 1993 federal appeals court opinion, not in an announcement R01. In Canada the label today reads "sugar/glucose-fructose", which allows either R03.

In 2017, Hamburg's consumer protection agency found that German Nutella had changed: skimmed milk powder up from 7.5% to 8.7%, sugar up from 55.9% to 56.3%, and the colour lighter. Its laboratory put the cocoa at about 7.4%, down from about 8.5%. Ferrero called it a fine adjustment R04.

In 2007 and 2008, Hershey replaced cocoa butter with vegetable oils in several US products, and Kissables went from "milk chocolate" to "chocolate candy" because they no longer met the legal standard for milk chocolate R11 R13. In New Zealand, Cadbury put palm oil into Dairy Milk and took it out again in 2009 after customers noticed R14.

The revisions, counted

A fixed definition makes the drift measurable. A food counts as hyper-palatable when it hits one of three nutrient combinations: a lot of fat with a lot of salt, a lot of fat with a lot of simple sugar, or a lot of carbohydrate with a lot of salt. Applied unchanged to the US government's food databases, it caught 49% of foods in 1988, 62% in 2001 and 69% in 2018. The same items, tracked across those years, became about four times more likely in odds terms to meet it, mostly through fat combined with salt E01.

Canadian packaged food sits level with it. Applied to 5,340 Canadian packaged products in 2023, the same definition caught 61.37%, against 63.03% of American products K03.

Canada's own reference file does not record the revisions, because it rarely takes the measurement again. Of 3,442 foods listed in both the 2001 and the 2026 editions of Health Canada's nutrient file, 55% carry exactly the same energy, fat, carbohydrate and sodium values in both K11 K06.

Ultra-processed food, classified by how a food is made rather than by its nutrients, supplied 45.7% of Canadians' daily energy in 2015, and more than half for children and teenagers H09.

Which way the revisions run

Revisions run both ways under the same names. Across 6,628 Canadian products matched between 2013 and 2017, 12.4% cut their sugar and 11.0% raised it R18. Health Canada's voluntary sodium targets were met in 13 of 94 food categories, and 48% of categories made no meaningful progress R09.

The healthier revisions that reached whole markets came with a rule. Canada banned partially hydrogenated oils on 17 September 2018 R06. After the UK announced its soft drinks levy, the share of drinks above 5 grams of sugar per 100 millilitres fell from an expected 49% to 15% R20. Chile's warning labels cut the share of best-selling products rated "high in" a nutrient from 70.8% to 52.5% R21.

Left to the maker, a formula is revised toward cost. It is revised toward health when a rule requires it.

A batch is released when it meets its release criteria. Fresh produce has them too. They are written in the grade standards and the marketing orders, and they describe a fruit that will survive the truck.

Canada's grades, the general US grades and the US government's own purchase specification for fresh fruit release produce on size, colour, shape, defects, condition and a cap on over-ripeness. None of them tests flavour. The strawberry, tomato and peach standards carry no sugar test at all S19 S21 S22.

Where sugar is written in, it is a floor

Sugar becomes a condition of sale for a short list of crops, as a minimum-maturity floor. Kiwifruit must reach 6.2% soluble solids. Table grapes 14% to 17.5% depending on variety. California cantaloupe 8%. Honeydew 10%. Valencia oranges a sugar-to-acid ratio of 8 to 1 S01 S06 S14 S09.

Those floors mark the point at which fruit will finish ripening and survive storage. In 2000 the US lowered the kiwifruit floor from 6.5% to 6.2%, citing ripening potential, other exporters' rules and lower reinspection costs, and declined to raise it S03. University of California researchers tie consumer acceptance of kiwifruit to at least 15.1% dry matter at harvest S04. Zespri, which sells on eating quality, refuses kiwifruit below 15.5% dry matter and pays its growers more as dry matter rises S05.

Washington State shows what happens when the floor is raised. In 2002 it lifted the minimum for Red Delicious shipped before 1 October from 10% to 11% soluble solids, in its own words "to market a sweeter more edible apple" S18.

The tomato, specified

Most Florida tomatoes are picked mature-green and ripened with ethylene gas for one to five days, and 20% or more of a green-picked lot can be too immature to ripen properly S24. The grower is paid on packout, grade, size and yield S29.

In 2017 a team led by Denise Tieman and Harry Klee measured flavour chemicals in 398 modern, heirloom and wild tomatoes. Thirteen flavour compounds were significantly lower in modern varieties. Forty-seven of 48 modern varieties carried the low-sugar version of two key sugar genes, and bigger fruit was reliably less sweet. The flavour genes were lost while breeders selected for yield, disease resistance and firmness P01.

For about 70 years breeders selected tomatoes that ripen to an even red, so a whole crate colours at once. The trait is a broken copy of a gene that builds chloroplasts in the fruit, and fruit with the working gene carry about 10% more of the sugars and acids that make taste P02.

Firm is not fragrant

Apples are sold most of the year from cold, low-oxygen storage, often after treatment with 1-MCP, a compound that blocks the ripening hormone ethylene and keeps fruit firm. In Michigan State University trials on seven varieties stored up to eleven months, 1-MCP and the lowest-oxygen storage each held back the return of aroma, storage length did the most damage, and the effects added up P03 P04.

Cavendish bananas are just under half of world production and nearly all of the export trade. They are cut green, shipped at about 13 to 14 degrees Celsius because colder fruit is damaged, and ripened in rooms dosed with ethylene, typically 100 parts per million for a day; naturally ripened bananas carry more aroma compounds P05 P06 P07 P08. Carrots stored near that gas make 6-methoxymellein, a bitter compound, and room-temperature retail storage cuts their beta-carotene and vitamin C by up to 70% P09 P11.

More per hectare, less per gram

Rothamsted's Broadbalk field in England has kept its wheat since 1845. Zinc, iron, copper and magnesium in the grain held steady until the mid-1960s and then fell as semi-dwarf high-yield varieties came in. The soil did not get poorer. Yield and the share of the plant that becomes grain explain the decline E04.

Across 43 US garden crops, the USDA's 1999 tables show lower median values than its 1950 tables for six nutrients, from 6% less protein to 38% less riboflavin E03. Variety trials show the same mechanism directly: higher-yielding varieties carry lower concentrations of minerals and protein, a genetic dilution effect P16.

Produce is released when it can survive the trip. Whether it is worth eating is not a release criterion.

Fruit and whole grains remain what diets are shortest of: diets low in whole grains and low in fruit are two of the three largest dietary costs in the FAO's accounting H08. The produce is still the better food. It is specified for someone other than the person eating it.

Adherence is the clinical word for taking the full dose, on schedule. The controlled trials of ultra-processed food measure exactly that: how much people take when nobody tells them how much to take.

In 2019 the US National Institutes of Health admitted 20 adults for four weeks. Two weeks of ultra-processed meals, two weeks of minimally processed meals, in random order, eat as much as you like. The meals offered were matched for calories, energy density, macronutrients, sugar, sodium and fibre. On the ultra-processed diet people ate about 508 more calories a day and gained about 0.9 kilograms; on the other they lost about 0.9 H04.

Held every day, a dose that size compounds. In the NIH's model of adult metabolism, each 10 extra calories a day adds about a pound of eventual body weight, half of it within a year and 95% within about three. Five hundred extra calories a day comes to about 25 pounds, 11 kilograms, in the first year, and about 50 pounds, 23 kilograms, where it levels off, because a larger body burns more H13.

A 2024 trial in Japan repeated the design with nine men for a week on each diet. On the ultra-processed diet they ate 813.5 more calories a day, gained 1.1 kilograms more, and chewed less per calorie N36.

How the dose gets larger

In the NIH trial, people ate the ultra-processed meals faster and did not rate them as more pleasant. Across 2,733 measured meals, energy density, eating speed and hyper-palatable food each independently raised how much people ate N35. When meals were given a harder texture so they took longer to eat, people ate 26% fewer calories N33.

The extra intake does not come from enjoying the food more. It comes from food that is denser, softer and quicker to finish.

The tobacco years

US tobacco companies owned some of the largest American food companies from 1980 to 2001. Between 1988 and 2001, foods they owned were 29% more likely to meet the fat and salt definition and 80% more likely to meet the carbohydrate and salt definition than other foods. By 2018 those combinations were common across the food supply E02.

Philip Morris bought General Foods in 1985 and Kraft in 1988. R.J. Reynolds bought Nabisco Brands in 1985 and had owned Hawaiian Punch since 1963. Kool-Aid, Tang and Capri Sun sat under Philip Morris until Kraft was spun off in 2007. A 1962 R.J. Reynolds document observed that "many flavourants for tobacco [would] be useful in food, beverage and other products" C02 C07.

On the Yale Food Addiction Scale, the foods most tied to loss of control are processed foods high in fat and fast-digesting carbohydrate: pizza, chocolate, chips H01. Pooled across studies using the scale, 14% of adults and 12% of children meet its threshold H12.

Instruments are calibrated against a reference. The palate is calibrated against what it is fed, and the controlled studies show how.

Intake sets the level

Adults who cut their sodium for five months came to prefer less salt in their food C24. Adults who cut simple sugars for three months rated the same puddings about 40% sweeter, while liking them no more and no less C25. Intensity follows intake. For sweetness, liking holds steady: a six-month trial that raised or lowered 180 adults' exposure to sweet foods left their liking for sweetness where it was N28.

Vegetables are learned

Repeated tasting raises children's liking for a vegetable L17. Flavour pairing works too: children who are sensitive to bitterness ate 80% more broccoli when it came with a dip, and toddlers ate more green beans with added salt L08 L09. What is learned is the vegetable as seasoned.

What the supply now carries

Statistics Canada's food availability series puts salad oils at 2.62 kilograms per person in 1970 and 17.22 kilograms in 2025, while refined sugar fell from 44.97 to 27.13 kilograms L25. The fat-and-salt combination that drove the US database trend is the direction the supply has moved.

The first calibration

Calibration starts early. In 2010, 53% of 186 Canadian baby and toddler foods drew more than 20% of their calories from sugar N18. In a 2025 national analysis, 55% of 423 infant and toddler products would carry Canada's "high in sugars" symbol N20. Health Canada's own guidance says commercial infant foods are not needed and can be high in added sugar N22.

Infants routinely given sugar water drank more sugar water at six months and at two years N25. The formulation is the manufacturer's decision. Infant formula itself is necessary for the babies who need it; the WHO and UNICEF finding concerns how it is marketed, which reached 51% of parents and pregnant women surveyed in eight countries C20.

The palate is set against the product on the shelf. The product is set against its specification.

Every specification carries a signature block. On ordinary food the signatures belong to breeders, growers, buyers, manufacturers and the people who write the rules, each paid to optimise something specific.

Who decides what reaches the shelf

1. BreedersSelect for yield, disease resistance, uniform ripening and firmness, the traits growers are paid for.
2. Growers and packersPaid on packout, grade, size and yield. "The grower is paid for size and yield, and flavor is irrelevant," in the words of the tomato geneticist Harry Klee.S29 S30
3. Grades and buyer specificationsRelease fruit on size, colour, shape, defects and firmness.
4. ManufacturersRevise formulas for cost, shelf life and repeat purchase.
5. RetailersDecide what is stocked, where, and under whose label.
6. Regulators and the science behind themSet the labels, the limits and the guidance.
7. The eaterTakes the dose.

Why the signatures point one way

The Lancet's November 2025 series on ultra-processed food sets out that these foods grow because they are more profitable than other food, and that the main barrier to policy is the industry's coordinated political activity: lobbying, placing people inside government agencies, and litigation H05.

Paying for the science

In 1965 the Sugar Research Foundation paid two Harvard researchers $6,500 to review the evidence on diet and heart disease. Their review ran in the New England Journal of Medicine in 1967, singled out fat and cholesterol, played down sugar, and did not disclose the funding C03.

In 1968 the same industry funded a rodent study in Birmingham. When it produced early results linking sucrose to raised blood fats, the funder rated its value "nil" in September 1970, stopped paying, and the results were never published C04.

Of the 20 people who advised on the 2020 US Dietary Guidelines, 95% had at least one conflict of interest with the food or pharmaceutical industries, most often research funding and advisory board seats C05.

The signature that changes the direction

Health Canada's front-of-package "high in" symbol for saturated fat, sugars and sodium became mandatory on 1 January 2026, and Health Canada expected manufacturers to reformulate rather than carry it C15. The trans fat ban, the UK levy and Chile's labels show what that signature does: it moves a whole market toward health.

The direction of a formula follows whoever writes its specification.

A planogram is the drawing that tells a store what goes on each shelf, where, and how much room it gets. It is a specification too, and the record shows what it is drawn to do.

Produce at the door

In the grocery industry's own research, produce is the number one reason shoppers choose a store G19. Single produce items are priced to pull people in. In Britain's 2009 banana war, Asda sold loose bananas at 47 pence a kilo while importers were asking £1.20, and Waitrose's managing director said matching it was costing well over £100,000 a week G14.

The department itself pays its way. Across 15 US chains in 2023, produce earned a 38% gross margin on 14.8% of store sales, after losing about 5.5% of it to spoilage, against roughly 28% for the average independent grocer's whole store G01 G17. In Canada, fresh fruit and vegetables are 12.6% of food retailers' sales, about the same as packaged dry goods G03.

The centre aisles carry other income

A supermarket stocks 33,248 items V20. The last federal count of produce items in American stores was 335 V21. The rest of the store earns money the produce aisle does not: payments from the manufacturers whose products fill it. Kroger booked $8.5 billion in vendor allowances in 2017, against $2.1 billion in operating profit; much of it funds price promotions, and all of it is money the supplier pays the store G10. In the FTC's 2003 case studies, slotting fees to launch one product nationally ran from about $1 million to more than $2 million G11.

In 2020 Walmart Canada imposed a 1.25% infrastructure fee and a 5% e-commerce fee on its suppliers, and Loblaw raised its own G06. Canada's voluntary Grocery Code took full effect on 1 January 2026 G07. The store also writes its own labels: about a third of Loblaw's grocery sales are its control brands, made by contract manufacturers, and George Weston Limited owns 52.6% of Loblaw W05.

Every layer held by a few

Five chains take most of Canada's grocery sales. A US government estimate for 2024 puts Loblaw at 17%, Costco at 15%, Sobeys at 14%, Walmart at 13% and Metro at 6% W04. The Competition Bureau found food gross margins up one to two points since 2017, while the three largest grocers' profits rose from $2.4 billion in 2019 to $3.6 billion in 2022 G04.

Upstream, four firms held about half of global commercial seed sales in 2020, and in the European Union four firms hold 72% to 95% of the plant variety rights for tomato, lettuce, cucumber and carrot W18 W17.

The layers are held by different owners. Dole's packaged foods were sold to ITOCHU in 2013, and Campbell bought Bolthouse Farms' carrots in 2012 and sold them in 2019 W11 W14. The exception is new: in March 2026 Fresh Del Monte bought the bankrupt packaged Del Monte business, putting the brand under one owner for the first time in nearly four decades W10. In Canada this year, the Competition Bureau moved to block Nortera, already the dominant vegetable processor and maker of grocers' private labels, from buying Green Giant, and the deal was abandoned W15.

The advertising follows the shelf. Fruit and vegetables received 2.1% of the food and drink advertising spend measured in Canada in 2019 W20. In the US, food advertising ran to $13.4 billion in 2017, about 3% of it for juice, water, nuts and fruit combined W19.

Fewer varieties on the shelf

Almost all bananas in international trade are a single clone, Cavendish, and yellow bananas are 90.8% of US banana sales V02 V23. Cavendish replaced Gros Michel after a soil fungus destroyed it in the middle of the last century. A new strain that kills Cavendish, Tropical Race 4, reached Colombia in 2019, Peru in 2021 and Venezuela in 2023, and in December 2025 Ecuador, the world's largest exporter, confirmed it and declared an emergency V03 V05.

Five varieties supply about 60% of the US apple crop: Gala, Red Delicious, Honeycrisp, Granny Smith and Fuji V07. New premium apples are licensed to closed clubs; Cosmic Crisp can be grown only in Washington until 2032 V10. The seed catalogue did not collapse the way an often-quoted figure claims: vegetable varieties offered for sale in 2004 were within about 2% of 1903 V15. The narrowing is in what is grown at scale and shipped. Between 1961 and 2009 national food supplies around the world became 36% more alike V19.

The restaurant kitchen

In 2025, 56.3% of US food spending went to food away from home F08; Canadian households spent about 28% of their food budget in restaurants in 2023 F10. That supply is concentrated too. Sysco estimates it serves about 18% of a $377 billion US foodservice market, and its own Sysco brand makes up 35.4% of the cases its US broadline business ships F01. When Sysco tried to merge with US Foods in 2015, a federal court found they were the only two national broadline distributors and blocked the deal F06.

Fresh produce is 8% of what Sysco sells; meat, canned and dry goods, and frozen food are 53% F01. In Canada, more than half the energy eaten in restaurants is ultra-processed F11.

The produce aisle invites the shopper in and earns its margin. The centre aisles carry the supplier payments and the store's own labels, and every layer behind them is held by a few.

A drug's adverse events are reported to the regulator that approved it. Food's are reported to clinics, dentists and public budgets, and nothing routes them back to the specification.

At the scale of a person

In a British trial published in 2025, 55 adults ate two eight-week diets delivered to their homes. Both followed the UK's Eatwell Guide; one was ultra-processed, one minimally processed. They lost 2.06% of body weight on the minimally processed diet and 1.05% on the ultra-processed one, about a kilogram apart, with lower triglycerides and fewer food cravings on the minimally processed diet E05.

Sugar's own adverse events are settled. In trials of free-living adults, cutting sugar lowered body weight by 0.80 kilograms and adding it raised weight by 0.75, through the extra calories N07. Tooth decay is lower when free sugars stay under 10% of energy, the basis of the WHO's 2015 recommendation N08 N06. Sugar-sweetened drinks raise C-reactive protein, a marker of inflammation: by 60% to 109% in three weeks in one trial, and across 64 trials sugar raised it when it came in sweetened drinks N01 N03.

Swapping the sugar for sweeteners does not close the file. The WHO advises against non-sugar sweeteners for weight control: long-term studies tie them to higher risks of obesity, type 2 diabetes and heart disease, while short trials show only small weight losses C21 N31.

At the scale of a population

A 2025 model combined cohort studies into one estimate: each 10-point rise in the ultra-processed share of a diet carries about 3% higher risk of dying early. Across eight countries, that attributes between 4% of premature deaths in Colombia and 14% in the United Kingdom and the United States to ultra-processed food H02.

In Canada, adults eating the most ultra-processed food had 31% higher odds of obesity, 37% higher odds of diabetes and 60% higher odds of hypertension than those eating the least H10.

At the scale of the system

The UN Food and Agriculture Organization prices the hidden costs of the world's agrifood systems at 11.6 trillion dollars a year in 2020 purchasing-power terms. Seventy percent, 8.1 trillion, comes from diets that lead to chronic disease, led by diets low in whole grains, high in sodium and low in fruit H08.

Those costs are absent from the price at the till. They are paid by the people who eat the food and by the public systems that treat them, and none of it returns to the people who set the specification.

The revenue is booked at the register. The adverse events are booked to someone else.

Revisions, payments, measurements and rules, dated. Filled markers are measurements; red markers are decisions.

Eight findings, each resting on the record above.

1. Formulas are revised under unchanged names. Cost-driven revisions are found by courts, consumer agencies and ingredient lists. They are not announced.
2. Fresh produce is released on appearance and durability. No Canadian grade and no general US grade tests flavour. Where a sugar floor exists, it sits at the point fruit will finish ripening, below what eaters accept as good.
3. Breeding and storage for the trip cost flavour and nutrient density. Modern tomatoes carry less of 13 flavour compounds. Wheat bred for yield carries less zinc, iron, copper and magnesium in every gram.
4. Ultra-processed food raises the dose. In controlled trials people ate about 500 to 800 more calories a day, driven by energy density and eating speed.
5. The palate follows the supply. Preferred salt level tracks salt intake, vegetables are learned, and the calibration begins with infant foods that Health Canada says are not needed.
6. Formulas move toward health when a rule requires it. Bans, levies and mandatory labels moved whole markets. Voluntary sodium targets were met in 14% of categories.
7. The costs are carried outside the price. 8.1 trillion dollars a year in health costs from diet worldwide, paid by eaters and public systems.
8. The shelf is narrow at every layer. Produce brings the shopper in and earns its margin, while supplier payments and the store's own labels fill the centre aisles. Four firms hold half the world's commercial seed, five chains most of Canada's grocery, and one distributor about a fifth of US foodservice. Traded bananas are one clone, now under attack across Latin America.

Corrective action

Every revision in this file that moved a whole market toward health came with a rule: a ban, a levy or a mandatory label. Canada has used two of the three. The specification for ordinary food can carry a line for the person eating it, and the record shows one way it gets there.