A significant body of new research, unveiled at the American College of Cardiology’s Annual Scientific Session (ACC.26), strongly indicates that individuals who frequently consume ultra-processed food items face a substantially elevated risk of experiencing severe cardiac incidents. The findings reveal a stark contrast in outcomes: those ingesting nine or more servings of these highly processed foods daily exhibited a 67% greater propensity for major cardiovascular events when compared to individuals whose daily intake approximated a single serving. This category of food encompasses a vast spectrum of readily available, manufactured products, including but not limited to, snack items like chips and crackers, pre-prepared frozen meals, processed meats, beverages laden with sugar, and commercial breads and breakfast cereals.
The observed correlation between ultra-processed food consumption and cardiovascular risk is demonstrably dose-dependent, meaning that the greater the intake, the more pronounced the danger. Each additional daily serving of these foods was associated with a more than 5% amplification in the probability of suffering a heart attack, stroke, or succumbing to conditions such as coronary heart disease or stroke. Intriguingly, this heightened risk profile was found to be even more pronounced among Black Americans when juxtaposed with other racial demographics.
"The association between ultra-processed foods and an increased risk for heart disease is well-established, and while many of these products are marketed as convenient options for on-the-go meals or snacks, our findings strongly suggest they should be incorporated into one’s diet with considerable restraint," commented Dr. Amier Haidar, MD, a cardiology fellow at the University of Texas Health Science Center at Houston and the principal investigator of the study.
This particular investigation stands out as one of the pioneering large-scale studies to meticulously examine the intricate relationship between the consumption of ultra-processed foods and cardiovascular disease within a diverse cohort of United States adults. The outcomes echo and reinforce findings from prior research, much of which originated in European settings, thereby furnishing crucial insights applicable to a broader and more varied population.
The analytical framework of the study involved a comprehensive review of dietary data from 6,814 adults, aged between 45 and 84 years, who had no pre-existing diagnosed heart conditions and were participants in the Multi-Ethnic Study of Atherosclerosis (MESA) cohort. Researchers employed detailed food frequency questionnaires to accurately estimate the daily quantity of ultra-processed foods consumed by each participant. The classification of foods into different processing levels was guided by the NOVA system, a widely recognized framework that categorizes foods into four distinct groups: unprocessed or minimally processed (exemplified by whole corn on the cob), moderately processed (such as corn starch or canned corn), and ultra-processed items (like corn chips).
Participants who reported the highest daily intake of ultra-processed foods averaged approximately 9.3 servings, whereas those in the lowest intake category consumed, on average, a mere 1.1 servings per day. When compared to the lowest consumption group, individuals in the highest consumption bracket faced a 67% elevated risk of mortality from coronary heart disease or stroke, or of experiencing non-fatal heart attacks, strokes, or resuscitated cardiac arrest.
A critical aspect of the study’s findings is the persistence of this elevated risk even after accounting for a multitude of confounding factors. "We meticulously controlled for a wide array of variables throughout this study," Dr. Haidar explained. "Irrespective of the total caloric intake per day, regardless of the overall nutritional quality of an individual’s diet, and after adjusting for prevalent cardiovascular risk factors such as diabetes, hypertension, elevated cholesterol levels, and obesity, the detrimental risk associated with higher consumption of ultra-processed foods remained remarkably consistent."
These results strongly suggest that the adverse health consequences attributed to ultra-processed foods cannot be solely explained by their caloric density or the general quality of the diet. Instead, the very nature of food processing itself appears to exert an independent influence on cardiovascular risk, underscoring the importance of considering both the processing methods and the intrinsic nutritional composition of foods.
Further examination revealed disparities in the magnitude of risk across different demographic groups. For every additional daily serving of ultra-processed foods consumed, there was a corresponding 5.1% increase in the likelihood of experiencing adverse cardiac events. This incremental risk was notably amplified among Black Americans, who experienced a 6.1% rise in risk per serving, compared to a 3.2% increase observed among non-Black individuals. The researchers posited that a confluence of factors, including targeted marketing strategies for these products and potentially limited accessibility to less-processed food options in certain communities, may contribute to these observed differences in consumption patterns and subsequent health outcomes.
Acknowledging the inherent limitations of the study is crucial for a comprehensive understanding of its implications. Given that the MESA study was not initially designed with the primary objective of quantifying ultra-processed food intake, the dietary data relied on self-reported information gathered through questionnaires. Furthermore, the estimation of intake was based on the number of servings rather than a precise tracking of individual food items.
While the researchers did not conduct direct investigations into the underlying biological mechanisms driving these associations, existing scientific literature offers compelling explanations. Previous studies have indicated that ultra-processed foods are typically characterized by high concentrations of calories, added sugars, and unhealthy fats. Such compositions can profoundly impact satiety signals and metabolic processes, potentially leading to weight gain, systemic inflammation, and an accumulation of visceral fat – all recognized contributors to an increased risk of cardiovascular disease.
In light of these findings, individuals seeking to mitigate their cardiovascular risk are advised to cultivate a heightened awareness of the types of foods they consume and to diligently scrutinize nutrition labels. These labels provide essential details regarding the quantities of added sugars, sodium, fats, and carbohydrates per serving, which are often found in significantly higher amounts in ultra-processed items compared to their less-processed counterparts, such as plain oatmeal, nuts, legumes, and fresh or frozen fruits and vegetables.
In a parallel development aimed at empowering consumers, the American College of Cardiology (ACC) published a 2025 Concise Clinical Guidance report in the Journal of the American College of Cardiology (JACC). This report advocates for the implementation of a standardized front-of-package labeling system, a move intended to enhance the visibility, accessibility, and attainability of healthier food choices for all consumers.
This significant research was concurrently published in the esteemed journal JACC Advances.
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