Ultra-processed foods: what the term means and how to choose

In the evening, frozen vegetables, tinned beans, bread and a microwave meal may all be on the kitchen table. All have undergone some processing. But knowing that a food was made in a factory does not yet tell us how it fits into someone’s diet. That takes a closer look.

The concept of ultra-processed food helps researchers study food systems and diets. In a shop it offers an additional question to ask about a product, although it does not replace assessing ingredients, nutritional value, price and what someone actually eats throughout the day.

In the NOVA classification, ultra-processed foods are industrial formulations that often contain fractions of food ingredients and additives for taste, colour, texture or convenience. This group can include sugary fizzy drinks, some snacks, confectionery and ready meals.

Heating, freezing or packaging alone does not make food ultra-processed. Frozen broccoli without sauce, pasteurised milk and dried lentils do not become the same type of food as a sugary drink merely because they are sold in a shop.

Yoghurt may contain milk and cultures, or it may be a complex dessert with added ingredients. Bread is also made using different formulations. Appearance or the number of lines on a pack does not always allow a confident NOVA classification.

Remember this limitation when social media offers to identify “dangerous food” by five ingredients or an unfamiliar word. The classification is not a laboratory toxicity test for each additive. Its subject is the nature of processing and production, not a diagnosis of an individual pack.

In Kevin Hall and colleagues’ 2019 study, 20 adults staying in a research facility received ultra-processed and minimally processed diets for two weeks each. They could eat as much as they wanted. On the ultra-processed menu, participants consumed around 500 kcal more per day on average; their weight increased, while it decreased on the other menu.

This is an important experiment, but a small, short one. It compared whole menus under specified conditions. It cannot show that any individual product in this group will necessarily cause weight gain, or establish the role of each additive. The original paper by Hall and colleagues.

Large observational studies can compare eating habits with later health. Yet people also differ in income, access to healthcare, smoking, movement and other circumstances. Statistical adjustment helps, but does not turn every association into a proven effect of a single ingredient.

So “this bar causes disease because it belongs to that group” goes too far. More practical questions are how often it replaces a meal, what else the diet contains and whether another convenient option is available.

When comparing similar products, look at protein, fibre, salt and sugars, saturated fat and your usual portion. Consider what the food contributes to your day too: does it help you have lunch, or mostly displace other food?

A ready-made bean soup and a sugary drink have different nutritional profiles, even if both come in packaging. Likewise, a homemade cake does not become an everyday dietary foundation simply because it was baked at home. More than one feature needs consideration.

You do not have to begin by clearing out every cupboard. If dinner consists only of a ready-made convenience food, add frozen vegetables, tinned beans or another accessible side dish. If drinks and snacks dominate your day, a regular lunch might be the first change.

Convenient preparation helps too: cooked grains, eggs, washed salad or a portion of cooked lentils in the freezer. These reduce evening decisions. Processed foods such as tinned pulses can support this arrangement rather than contradict it.

Cooking from scratch every day is easier with time, a fridge, electricity and energy. After a long shift or during a move, a packaged ready meal can be entirely practical. Reproaches do not create different circumstances.

Choose one change that adds variety: vegetables with lunch, pulses more often or a change to your usual sugary drink. There is no need to prove the purity of your entire menu. For a closer look at an individual pack, see the practical article on choosing a snack.

Try assembling dinner from three convenient ingredients: cooked grains, tinned beans and frozen vegetables. Prepare and heat them according to their instructions and storage requirements, then add your favourite seasonings. The point is that useful food processing can save energy. With a few combinations like this, a ready-made convenience food is no longer the only option after work.

The MriyaRun “Conversation with Yourself” body journal can hold a brief account of an evening: how much energy you had, whether you managed to eat during the day, what you felt and what would help now. You do not need to grade every pack. It is more useful to notice a circumstance you can actually change: an accessible lunch, food in the freezer or help with cooking.