The modern American diet is heavily influenced by convenience. Ultra-processed foods, widely available and often inexpensive, have become a staple in households across the United States. From ready-to-eat meals to sugary beverages and packaged snacks, these foods are designed for taste, convenience, and shelf life rather than nutrition. Recent research has begun to show that such diets may come at a serious cost to heart health.
A new study published in The American Journal of Medicine by Willett et al. highlights the link between ultra-processed food consumption and cardiovascular disease in U.S. adults. The study found that individuals consuming the highest amounts of ultra-processed foods had a 47 percent higher risk of developing cardiovascular disease compared to those with the lowest intake.
Understanding this relationship is crucial not only for individuals seeking to improve their health but also for health care providers aiming to guide patients toward healthier dietary habits.
Ultra-processed foods (UPFs) are defined by the widely accepted NOVA classification system. These foods undergo extensive industrial processing and often contain additives, preservatives, flavor enhancers, and high amounts of sugar, sodium, and unhealthy fats. Common examples include:
These foods account for nearly 60 percent of total energy intake in the United States and represent the primary source of added sugars in the typical diet. High consumption of UPFs is strongly associated with cardiometabolic risk factors such as obesity, hypertension, and type 2 diabetes, all of which increase the likelihood of cardiovascular disease.
Willett and colleagues conducted a detailed analysis using the most recent data from the United States National Health and Nutrition Examination Survey (NHANES) from 2021 to 2023. NHANES is a cross-sectional study that collects nutritional, demographic, and health data from a random sample of U.S. adults.
For this analysis, participants aged 18 years or older with at least one valid day of dietary recall and available cardiovascular outcomes were included. Cardiovascular disease was defined as self-reported myocardial infarction or stroke.
Dietary intake was assessed using the U.S. Department of Agriculture Food and Nutrient Database, with foods categorized using the NOVA system. Participants were divided into four quartiles based on the percentage of total daily energy derived from ultra-processed foods:
Covariates considered in the study included age, gender, race and ethnicity, poverty-to-income ratio, and cigarette smoking status.
The study included 4,787 adults with complete dietary and cardiovascular data. The average age was 55 years, and 55.9 percent of participants were women. The mean intake of ultra-processed foods across the sample was 26.1 percent of total energy.
In crude analysis, participants in the highest quartile of UPF consumption had a 92 percent increased risk of cardiovascular disease compared to those in the lowest quartile. After adjusting for age, gender, race, ethnicity, smoking, and socioeconomic status, the risk remained significantly higher at 47 percent.
| Quartile of UPF Intake | Cases/Total | Fully Adjusted Relative Risk | 95% Confidence Interval | p-value |
|---|---|---|---|---|
| Q1 (<12.2%) | 78/1197 | Ref. | — | — |
| Q2 (12.2–22.6%) | 85/1197 | 1.00 | 0.70–1.41 | 0.99 |
| Q3 (22.6–36.8%) | 89/1196 | 0.96 | 0.68–1.36 | 0.82 |
| Q4 (>36.8%) | 141/1197 | 1.47 | 1.06–2.04 | 0.02 |
These results suggest a statistically significant association between high UPF consumption and cardiovascular risk, even after adjusting for multiple demographic and lifestyle factors.
The study also explored dose-response relationships and the effects of cardiometabolic risk factors such as obesity, dyslipidemia, hypertension, and diabetes. The findings indicated that while these conditions are relevant, they act as effects of UPF exposure rather than confounders. Importantly, the results highlight that reducing ultra-processed food consumption could independently reduce cardiovascular risk.
The prevalence of ultra-processed foods in the U.S. diet and their association with cardiovascular disease represents a significant public health concern. Cardiovascular disease remains a leading cause of mortality in the United States, accounting for nearly one in every four deaths.
Reducing ultra-processed food intake offers a clear opportunity for risk reduction. Public health campaigns, nutrition education, and policy interventions can support individuals in making healthier food choices. For example:
Health care providers should actively counsel patients about the risks of ultra-processed foods and the benefits of therapeutic lifestyle changes, including increased physical activity, weight management, and adherence to dietary guidelines.
Despite the clear evidence of harm, there are several challenges in reducing UPF intake in the U.S.:
Addressing these barriers requires coordinated efforts at both the individual and societal levels. Policy measures such as taxation on sugary beverages, subsidies for fresh produce, and improved nutrition labeling can support healthier choices.
Individuals can take practical steps to reduce cardiovascular risk associated with ultra-processed foods:
The study by Willett et al. is observational and cross-sectional, meaning it can identify associations but not prove causation. Large-scale randomized controlled trials are needed to confirm whether reducing ultra-processed food intake directly reduces cardiovascular disease risk.
Additionally, research should explore the long-term effects of UPF consumption on mortality, quality of life, and healthcare costs. Understanding the biological mechanisms linking UPFs to heart disease, such as inflammation, oxidative stress, and gut microbiome changes, will further strengthen public health recommendations.
The evidence is increasingly clear: consuming high amounts of ultra-processed foods is associated with a significantly increased risk of cardiovascular disease. In a nationally representative sample of U.S. adults, those with the highest intake of these foods had a 47 percent higher risk of heart attacks and strokes compared to those with the lowest intake.
While additional research is needed to establish causation and determine optimal dietary interventions, the implications are clear for both individuals and healthcare professionals. Reducing ultra-processed food consumption, adopting other therapeutic lifestyle changes, and following evidence-based medical guidance can help protect cardiovascular health and improve overall wellbeing.
Reducing reliance on ultra-processed foods is not only a personal health choice but a public health priority. By making informed decisions about diet, Americans can lower their risk of heart disease and contribute to a healthier future for the nation.
This article is intended for informational purposes only and does not constitute medical advice. Individuals should consult with qualified healthcare professionals for personalized recommendations regarding diet, nutrition, and cardiovascular health.
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