Ultra-Processed Foods May Raise the Risk of Serious Disease and Early Death

Ultra-processed foods have become a major part of modern diets, but growing research suggests that eating too many of them could come with serious health consequences.

A large new analysis involving more than 50 studies and nearly 9 million adults has linked diets high in ultra-processed foods with an increased risk of cardiovascular problems, diabetes, obesity, mental health conditions, digestive diseases, cancer and premature death.

The findings add to growing concerns about ultra-processed foods, particularly in countries such as the United States, where these products are estimated to account for around 60 percent of the average diet.

What Are Ultra-Processed Foods?

Ultra-processed foods, often abbreviated as UPFs, are products that have typically undergone extensive industrial processing and may contain ingredients rarely used in ordinary home cooking.

They can include high levels of added sugar, sodium, refined grains and fats, alongside ingredients designed to improve flavor, texture, appearance or shelf life.

Common examples include cookies, chips, cakes, sweets, hot dogs, some frozen pizzas, sugary breakfast cereals, soft drinks and many packaged snack foods.

However, the term "ultra-processed" does not automatically mean that every food within the category has the same nutritional profile or health effects. Some packaged products, including certain yogurts and hummus products, may still provide useful nutrients and can be very different nutritionally from sweets, processed meats or sugary drinks.

This distinction is important when interpreting research into ultra-processed food consumption.

Study Links Ultra-Processed Foods to Multiple Health Risks

According to the newly reported analysis, people consuming diets higher in ultra-processed foods experienced significantly higher risks across several areas of health.

The analysis found that diets high in ultra-processed foods were associated with an increase of nearly one-quarter in the risk of cardiovascular events, diabetes and obesity.

Researchers also reported a 27 percent higher risk of depression and anxiety and a 31 percent higher risk of digestive disease.

Perhaps more concerning was the relationship observed between increasing consumption and cancer and mortality.

For every additional 100 grams of ultra-processed food consumed each day, researchers reported a 4 percent increase in the risk of developing cancer and a 3 percent increase in the risk of death from any cause.

These figures describe statistical associations identified across the research. They should not be interpreted as proof that eating a specific ultra-processed food directly causes cancer, cardiovascular disease or another individual health condition.

Why Could Ultra-Processed Foods Affect Health?

Researchers are still investigating exactly why diets containing large amounts of ultra-processed food are associated with poorer health outcomes.

One explanation involves their nutritional composition.

Many ultra-processed products contain substantial quantities of added sugars, sodium and refined carbohydrates while providing relatively little fiber and other beneficial nutrients. Diets dominated by these foods may therefore make it harder to maintain an overall balanced nutritional intake.

Scientists are also examining factors that go beyond traditional nutrition labels.

Processing can change the physical structure of food, while some products contain additives used to alter flavor, color, consistency and shelf life.

Researchers behind the new analysis highlighted emerging evidence concerning a possible "cocktail effect." This refers to the possibility that combinations of additives or other compounds may interact in ways that have different biological effects than individual substances considered separately.

However, this area of research is still developing, and further studies are required to establish whether particular combinations of additives directly contribute to disease.

Inflammation, Gut Health and Insulin Resistance

Previous research has also explored connections between ultra-processed diets and inflammation, gut health and insulin resistance.

Chronic inflammation is associated with numerous diseases, while insulin resistance plays an important role in the development of type 2 diabetes.

Researchers have additionally investigated compounds that can be produced during certain forms of food processing and whether they may contribute to cardiovascular risk.

Another potential concern is that ultra-processed foods can sometimes be extremely easy to eat quickly. Their texture, energy density and flavor can make it easier for some people to consume large quantities before feeling full.

The overall health effects of ultra-processed diets are therefore unlikely to have a single explanation. Nutritional composition, processing methods, food structure, additives, eating behavior and overall dietary patterns may all play a role.

There Are Important Limitations

While the scale of the analysis makes the findings noteworthy, observational nutrition research has important limitations.

Much of the underlying research relied on participants reporting what they ate through questionnaires or food journals. Self-reported dietary information can be inaccurate because people may forget what they consumed, underestimate portion sizes or incorrectly categorize particular foods.

Observational studies can also identify associations without necessarily demonstrating cause and effect.

People who consume large amounts of ultra-processed food may differ from those who consume less in other ways, including physical activity, income, access to fresh food, smoking habits and other lifestyle factors.

Researchers attempt to adjust statistically for these differences, but it is difficult to eliminate every possible confounding factor.

The findings therefore strengthen evidence of an association between high ultra-processed food consumption and poorer health, rather than proving that every ultra-processed product independently causes disease.

Ultra-Processed Foods Are a Major Part of the American Diet

The issue has particular significance in the United States because ultra-processed products make up a substantial proportion of food consumption.

Cost and convenience are important factors. Packaged and highly processed products can be inexpensive, widely available, easy to store and quick to prepare. Fresh foods may be more expensive or less accessible for some households.

That means reducing dependence on ultra-processed foods is not simply a matter of individual willpower. Food prices, availability, working hours, cooking facilities and access to healthier alternatives can all influence what people eat.

Do You Need to Eliminate Ultra-Processed Foods?

The research does not mean that people necessarily need to remove every processed or ultra-processed product from their diet.

Instead, the findings support greater attention to overall dietary patterns.

Eating more vegetables, fruits, legumes, whole grains, nuts and other minimally processed foods can help shift the balance of a diet away from products high in refined carbohydrates, added sugars and sodium.

Food labels can also provide useful information. Comparing products for added sugar, sodium, saturated fat, fiber and protein may provide a more complete picture than judging a food solely on whether it falls into a broad processing category.

The evidence increasingly suggests that the overall pattern matters. A diet dominated by sweets, processed meats, sugary drinks, chips and similar products is very different from occasionally consuming these foods within an otherwise varied and nutrient-rich diet.

As scientists continue investigating ultra-processed foods, the latest findings provide another reason to pay attention not only to how much we eat, but also to what our everyday food is made from and how extensively it has been processed.

Source: The Independent, published September 25, 2026.

Disclaimer: This article is for general informational and educational purposes only. It is not medical or nutritional advice and should not be used as a substitute for diagnosis, treatment or individualized guidance from a qualified healthcare professional. Health risks vary according to factors including a person's overall diet, medical history, lifestyle and individual circumstances. Anyone considering significant dietary changes, particularly people with an existing medical condition, should consult an appropriately qualified healthcare professional.