Traditional cheese made from milk, salt, enzymes, and bacterial cultures is not an ultra-processed food. It falls into the “processed food” category under the NOVA classification system, the framework most researchers use to define ultra-processed foods. However, many cheese products sold in grocery stores, particularly sliced cheese, spreadable cheese, and cheese labeled “cheese food” or “cheese product,” do qualify as ultra-processed. The difference comes down to what’s on the ingredient list.
How NOVA Classifies Cheese
The NOVA system sorts all foods into four groups: unprocessed, processed culinary ingredients (like butter or oil), processed foods, and ultra-processed foods. A block of cheddar, a wheel of brie, or a wedge of parmesan lands in group three (processed) because it’s made by adding salt and starter cultures to milk, then aging it. These are techniques people have used in kitchens for centuries.
A food crosses into ultra-processed territory when its ingredient list contains either food substances rarely used in home cooking (like hydrolysed proteins, whey protein isolate, maltodextrin, or high-fructose corn syrup) or cosmetic additives designed to improve taste and appearance (like emulsifiers, emulsifying salts, flavour enhancers, colours, or thickeners). The presence of even one of these ingredients is enough to classify a product as ultra-processed.
What Makes Processed Cheese Different
Processed cheese starts with real cheese but then gets melted down and blended with a range of industrial ingredients. Emulsifying salts like trisodium citrate, tetrasodium pyrophosphate, sodium tripolyphosphate, and sodium hexametaphosphate are added to create that smooth, uniform texture. These are not ingredients you’d find in a home kitchen, and their presence is a clear marker of ultra-processing.
The further you move along the spectrum, the more additives appear. “Pasteurized process cheese food” adds whey, skim milk solids, and other dairy-derived substances. “Process cheese spread” goes further with sweetening agents, starches, and gums for spreadability. And “pasteurized process cheese product,” the loosest category, has no legal limits on fat or moisture content and can include vegetables, meats, fruits, flavours, and colours. Each step adds more industrial ingredients and moves further from anything resembling traditional cheesemaking.
How to Tell by Reading the Label
You don’t need to memorize classification systems. Just flip the package over. A block of traditional cheese will list something like: milk, salt, bacterial cultures, enzymes. Four or five ingredients, all recognizable.
An ultra-processed cheese product will have a much longer list. Look for these red flags near the beginning or middle of the ingredient list:
- Whey protein or casein listed as separate ingredients (rather than being naturally present in milk)
- Maltodextrin, lactose, or dextrose added as fillers or for texture
- Hydrogenated oils or interesterified oils
Then check the end of the list for cosmetic additives:
- Emulsifying salts like sodium phosphates or sodium citrate
- Colours like annatto or artificial dyes
- Flavour enhancers or flavours
- Thickeners or gelling agents
If you see any of these, the product is ultra-processed. The word “cheese” on the front of a package tells you very little. The phrases “cheese food,” “cheese product,” or “cheese spread” are strong hints that you’re looking at something ultra-processed, but the ingredient list is always the definitive check.
Nutritional Differences That Matter
Traditional cheese is nutrient-dense. It provides protein, calcium, vitamin A, vitamin E, vitamin K2, and B vitamins including B12 and folic acid. Aged and fermented cheeses also contain live bacterial cultures that can benefit gut health. Research has shown that probiotic strains naturally present in cheese can reduce inflammation and support immune function, with studies finding measurable immune improvements in older adults who consumed cheese containing beneficial bacteria.
The calcium in cheese contributes to bone strength and has been associated with lower blood pressure. Artisanal cheeses made from pasture-raised or organic milk tend to have higher levels of omega-3 fatty acids and conjugated linoleic acid, particularly during spring and summer grazing seasons, compared to cheese from conventionally fed cows.
Ultra-processed cheese products retain some of these nutrients but dilute them with added water, fillers, and modified ingredients. The emulsifying salts add sodium beyond what traditional cheese contains. And the industrial processing eliminates the live cultures that give fermented cheese its gut health benefits.
Artisanal vs. Industrial Cheesemaking
The gap between traditional and ultra-processed cheese starts at the factory level. Large commercial operations use high-temperature, short-time pasteurization (72°C for 15 seconds), while small-scale cheesemakers typically use slower vat pasteurization (63°C for 30 minutes) or skip pasteurization entirely in raw milk cheeses. The gentler approach preserves more of the milk’s natural microbial diversity and flavour complexity.
Artisanal cheeses contain no additives like food colouring or stabilizers. Many are aged on wooden shelves that contribute additional flavour compounds, retain beneficial microbes, and naturally regulate humidity. Industrial cheeses, by contrast, tend to taste uniform regardless of how long they’ve been aged. When fewer additives are used, the quality of the milk itself becomes the dominant factor in the final product’s taste and nutrition.
The Bigger Picture on Ultra-Processed Foods
Growing evidence links high consumption of ultra-processed foods to increased health risks, though researchers are still working out exactly why. It could be the nutritional content, the additives, or other lifestyle factors that tend to cluster with heavy ultra-processed food consumption. The UK’s Scientific Advisory Committee on Nutrition reviewed the evidence in 2023 and concluded that limitations in the available research mean caution is still needed before making firm dietary recommendations specifically about ultra-processing.
What is clear is that eating patterns built around minimally processed foods, the Mediterranean-style diet rich in fruits, vegetables, fish, nuts, beans, and whole grains, consistently show benefits for heart health. Traditional cheese fits comfortably within that pattern. It is calorie-dense and can be high in salt and saturated fat, so a portion about the size of a matchbox (roughly 30 grams) per day is a reasonable amount. But it’s a fundamentally different food from the individually wrapped slices or squeeze-tube products that share its name.