Large Study Confirms Ultra-Processed Foods Raise Risk of Type 2 Diabetes and Early Death

A large study published in September 2026 confirmed that high consumption of ultra-processed foods is linked to an increased risk of type 2 diabetes, cognitive decline, and higher overall mortality, adding to a growing body of evidence against heavily processed diets.

Healthline reported the findings on September 28, 2026, noting that the study drew on data from hundreds of thousands of participants tracked over multiple years. Researchers found consistent associations between ultra-processed food intake and negative health outcomes across multiple disease categories.

Ultra-processed foods include packaged snacks, sugary drinks, instant noodles, processed meats, and ready-to-eat meals that contain additives, preservatives, and artificial flavors not typically found in home cooking. They now make up more than half of the calories consumed by the average American adult.

The study found that people who ate the most ultra-processed foods had significantly higher rates of type 2 diabetes compared to those who ate the least. The link to cognitive decline was also notable, with researchers finding that heavy ultra-processed food consumption was associated with faster deterioration in memory and thinking skills.

Mortality risk was elevated across the board for high consumers, even after researchers adjusted for other factors like smoking, physical activity, and overall calorie intake.

Public health experts say the findings reinforce the importance of dietary guidelines that emphasize whole foods, fruits, vegetables, and minimally processed proteins. The Global Wellness Institute highlighted the study in its September 2026 must-reads, calling chronic inflammation driven by poor diet one of the most pressing health challenges of the decade.

Researchers called for stronger food labeling requirements and public education campaigns to help consumers identify and reduce ultra-processed food consumption.