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More Than Half of the Calories Consumed in Wealthy Countries Come from Ultra-Processed Foods, and Recent Research Indicates This Dependence May Be Widening Chronic Diseases and Accelerating Biological Aging Processes
Ultra-Processed Foods (UPFs) are already associated with various chronic diseases, but a set of recent studies points to another concerning effect: they may be linked to an increase in biological age, an indicator used to estimate “how much the body has aged” beyond the number on the ID.
The discussion appears in an article by Graham Lawton, published on February 20, 2026, that connects this topic to other accelerators of aging such as obesity, stress, heatwaves, and pollution.
What Are UPFs and Why Does This Definition Matter
UPFs are generally pre-packaged foods made in factories from purified ingredients like sugars, fats, and proteins, often modified and combined with synthetic additives, including colorings, emulsifiers, and preservatives. The exact definition is disputed, but the practical rule is to recognize industrially formulated products.
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The text cites examples such as inexpensive ready meals, salty snacks, industrialized bread, sugary drinks, instant noodles, ice creams, candies, confectionery items, processed meats, and condiments like mayonnaise and ketchup.
Why Consumption Surged in Recent Decades
In the last five decades, ultra-processed foods have made up an increasingly larger portion of the Western diet. In high-income countries, including the United Kingdom, the article states that more than half of the calories consumed come from UPFs.
According to the text, this trend has stabilized in the last decade in some places but continues to grow globally, driven by convenience, price, and palatability.
The Link with Chronic Diseases and Mortality
The article emphasizes that there is a large body of evidence linking high consumption of UPFs to problems such as obesity, cancer, type 2 diabetes, cardiovascular disease, inflammatory bowel disease, fatty liver disease, and kidney disease.
It also mentions three cohort studies in Spain, France, and the United States, involving tens of thousands of participants, where the highest consumers of UPFs were more likely to die than moderate consumers during the monitored periods.
The Data That Changed the Debate: Biological Age and NHANES
The central point comes from an analysis published in 2024, based on 16,055 adults in the U.S., aged 20 to 79 years, using data collected between 2003 and 2010 in the NHANES (National Health and Nutrition Examination Survey). Researchers estimated the percentage of calories coming from UPFs and compared it with measures of biological age.
The result described is straightforward: the higher the percentage of UPFs in the diet, the greater the average difference between chronological age and biological age. The article states that each 10% increase in calories from UPFs was associated with +0.21 years in this divergence, approximately two and a half months.
The Difference Between Those Who Eat Less and Those Who Eat More
The text details the contrast between extremes of consumption in the NHANES study. Among those consuming less than 39% of their calories in the form of ultra-processed foods and those consuming more than 68%, the reported average difference was 0.86 years of biological age.
This may seem small on an individual basis, but the article highlights that modest increases in biological age have already been linked, in previous research, to small but significant increases in the risk of chronic disease, disability, and death in the following years.
“But Is Biological Age Inaccurate?”
The author acknowledges the criticism: measurements of biological age can be inaccurate, especially when used to “give a score” to individuals. Still, he argues that, in large comparative studies, the method can be useful because systematic errors would tend to affect everyone similarly.
In this sense, the greater interest is not to predict an individual’s fate but to observe whether populations with different diets exhibit consistent patterns of biological aging.
Evidence in Another Country: UK Data Analyzed by a Team in China
The article notes that other researchers observed something similar in a dataset from the United Kingdom, analyzed by a group in China. The reported conclusion is that those who consume a lot of UPFs tend to be biologically older and have a higher risk of death than moderate consumers.
It notes that these works, like the NHANES study, provide a snapshot “of a moment” and do not track changes in biological age over time, suggesting this as a next step for research.
The Mechanism Is Still a Dispute, but There Is an Important Clue
A central controversy is whether the harm from ultra-processed foods comes solely from being nutritionally poor or whether the processing itself adds an “extra” detriment. The article states that, in the NHANES study, even after considering nutritional quality and energy intake, this would not fully explain the increase observed in biological age.
The conclusion cited in the text is that “other properties related to processing” may contribute to accelerating biological aging processes, although it is still unclear which components are most responsible.
The Final Message: An Avoidable Factor in the “Senesogenic Environment”
The author’s proposal is to fit ultra-processed foods as another piece of the “senesogenic environment,” a modern world that favors premature aging. The idea is that part of the diseases linked to UPFs may reflect precisely this pro-aging effect.
Without promising magical solutions, the text concludes with a pragmatic piece of advice: whenever possible, reduce ultra-processed foods and prioritize real food, as many other accelerators of aging are hard to escape.
If you want, I can also make a second version even more “Discover” (more hook in the opening and shorter transitions), but without losing any source or number from the original.
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