A previous study, whose findings continue to resonate with relevance in 2025, revealed a worrying association between consumption of ultra-processed foods and a 41% increase in the risk of developing lung cancer, which remains one of the most prevalent types globally. The research, which analyzed data from more than 100,000 participants in the Estados Unidos, tracked diagnoses and deaths over almost two decades, from 1993 to 2018.
Although the study is observational in nature and does not establish a direct causal relationship, the consistency of the results raises serious concerns. The researchers indicate that intensive industrial processing and the presence of harmful substances may be contributing factors to the observed risks.
This finding reinforces a growing body of evidence linking ultra-processed foods to several chronic health conditions, such as type 2 diabetes, cardiovascular disease and early mortality.
Understand the connection between diet and lung cancer
The American research, which included 101,732 participants aged between 55 and 74 years, demonstrated a substantial correlation between the intake of ultra-processed foods and the development of lung cancer. During the 12-year period, 1,473 cases of non-small cell lung cancer (NSCLC) and 233 small cell lung cancer (SCLC) were identified. Após adjusting for factors such as smoking and general diet quality, individuals with higher consumption of ultra-processed foods were 41% more likely to be diagnosed with the disease, with even greater risks for the NSCLC (37%) and SCLC (44%) subtypes.
Ultra-processed foods, which include everything from fast food burgers to certain breakfast cereals, are defined by their extensive ingredient lists, which often contain additives, preservatives, colorings and flavors. Eles go through multiple stages of industrial processing, which not only profoundly alters their food matrix, but also reduces the concentration of essential nutrients and increases the presence of potentially harmful compounds.
Most consumed foods under scrutiny
Among the ultra-processed foods most present in the diet of study participants, processed meats, such as sausages and sausages, represented around 11% of consumption. Refrigerantes with caffeine and without caffeine also stood out, with 7.1% and 6.9%, respectively. Outros frequently consumed products included snacks, processed breads, ice creams and ready-made sauces, all widely available in supermarkets and fast food chains.
Current overview of lung cancer
Lung cancer continues to be one of the deadliest causes of cancer death globally, with 2020 data indicating around 2.2 million new cases and 1.8 million deaths. Although smoking is undeniably the main risk factor, the study highlights that diet, particularly excessive consumption of ultra-processed foods, can play a significant role in the growing incidence of the disease. In 2025, this correlation remains a critical point for public health, requiring a reevaluation of food policies and awareness campaigns.
Risks and composition of ultra-processed foods
The composition of ultra-processed foods presents several problematic elements that may contribute to the risk of lung cancer. Substâncias like acrolein, found in grilled sausages and caramelized sweets, is also a component of cigarette smoke, suggesting a similar cellular damage mechanism of action.
Furthermore, the plastic packaging of these products can release chemical compounds that, over time, accumulate in the body, potentially interfering with crucial biological processes. Low nutritional quality is another striking characteristic, with high levels of sugar, salt and saturated fats that promote inflammation and other metabolic imbalances.
Ease of access and aggressive marketing contribute to these foods being predominant in contemporary diets.
Preventive strategies and public health in 2025
Health experts in 2025 reiterate the importance of small, but consistent, dietary changes to reduce dependence on ultra-processed foods. Practicing cooking at home, carefully planning meals and carefully reading product labels are practical steps that can guide consumers towards healthier choices. The priority inclusion of whole foods, such as fruits, vegetables, legumes and grains, is essential to increase the nutritional quality of the diet and strengthen the body’s defenses against diseases.
Despite the undeniable convenience that ultra-processed foods offer in a fast-paced lifestyle, the cost to long-term health can be substantially high. In response to this reality, robust educational programs and tax incentives for fresh and minimally processed foods are strategies that can make healthier options accessible to a larger portion of the population, contributing to the prevention of chronic diseases.
Challenges and the future of research
Despite the relevance of the results, the original study has important limitations that must be considered. Sua observational nature prevents the establishment of a direct cause and effect relationship, and dietary data, collected at a single moment, do not reflect the dynamics of changes in participants’ eating habits over the years. Além Additionally, smoking intensity, a critical risk factor for lung cancer, was not fully detailed in the analyses.
Future research in 2025 and beyond is essential to deepen understanding of how specific chemical compounds present in ultra-processed foods interact with the human body. Também It will be crucial to investigate whether regulatory policies, such as mandatory additive reduction or product reformulation by the food industry, can effectively mitigate the health risks associated with these foods.
