A comprehensive analysis involving nearly nine million adults has found a consistent connection between diets high in ultra-processed foods and various chronic diseases, including cancer, cardiovascular disease, diabetes, and mental health issues. The research suggests that these foods, which are typically low in nutrients and high in additives, are associated with a greater risk of premature death.
Read More
David Xiao Liu, MD, a cardiologist and research fellow at Duke-NUS Medical School in Singapore, emphasized that while earlier studies have shown links between ultra-processed foods and specific diseases, this new analysis pools data from 51 studies to provide stronger evidence of their overall health risks. It also models a dose-response relationship, indicating how risks escalate with increased consumption of ultra-processed foods.
Ultra-processed foods are defined as ready-to-eat items—like packaged potato chips and sodas—or heat-and-serve products such as frozen pizzas and microwavable dinners, all of which undergo extensive industrial processing. Samantha Flanagan, DO, an assistant professor at Temple University’s Lewis Katz School of Medicine, noted that these foods typically contain higher levels of calories, refined carbohydrates, sodium, added sugars, and unhealthy fats while lacking fiber and beneficial micronutrients. The appealing taste of these processed foods can lead to overeating.
The authors of the study refer to the combined effects of various food additives as a "cocktail effect," suggesting that the interactions of these additives within the body may result in more pronounced effects than the individual ingredients alone. Previous research indicates that ultra-processed foods can adversely affect the gut microbiome and contribute to obesity, inflammation, and insulin resistance. Additionally, compounds formed during the processing of food, such as acrylamide and acrolein, have been linked to increased rates of cardiovascular disease.