The concept of ultraprocessed food (UPF) has become a hot topic in the health and nutrition world, with many claiming it's a major contributor to various health issues. But what exactly is UPF, and is it as scary as the headlines suggest? In my opinion, the term itself is a bit of a misnomer, and the science behind it is far from clear-cut. Let's take a closer look at why this term is causing a stir and whether it's justified.
The Birth of a Term
The term 'ultraprocessed food' was introduced in a 2009 paper by Brazilian researchers as part of the Nova grading system. This system aims to classify food processing levels, but it's here that the trouble starts. The term 'ultra' is vague and emotional, and the grading system doesn't actually measure processing. Instead, it's based on the researchers' opinions of what UPFs should look like. For example, any food requiring cooking is considered ultraprocessed, which is absurd when you consider a fresh bakery loaf.
The Problem with Subjectivity
The issue with UPF is that it's not based on objective measures of processing. Professor Carlos Augusto Monteiro, the researcher behind the Nova classification, argues that the problem is not the processing itself, but rather the separation of food from nature. This is a subjective view, and it's not clear how this translates into real-world health impacts. The majority of research showing negative health effects from UPFs is observational and low-quality, with little evidence of a direct causal link.
The Science Behind the Scare
The most robust studies comparing UPF diets to less processed ones show few negative impacts. At worst, UPFs might cause a few pounds of weight gain, but even this is uncertain. A recent paper in the journal Science argued that the modest negative effects seen in some studies are likely due to differences between diets that have nothing to do with processing. For example, UPF diets often have higher energy density, which is known to cause weight gain.
The U.K.'s Wise Move
The U.K.'s Food Standards Agency recognized the issue with UPF and largely discarded the concept in its 2025 guidance. Instead of focusing on processing, they advised people to follow a healthy diet, cutting down on saturated fat, sugar, and salt, and eating more vegetables and fiber. This makes sense, as the term UPF is almost entirely meaningless and based on subjective opinions.
The Bottom Line
In my opinion, the fear surrounding UPF is overblown. The term is vague and emotional, and the science behind it is far from clear-cut. While it's true that some UPFs are unhealthy, others are not. Instead of focusing on processing, we should be looking at objective measures of health and nutrition. The key message here is that we should be cautious about following trends and advice based on vague terms like UPF. It's always best to consult with a healthcare professional for personalized advice.
