Research suggests that a naturally occurring sugar in red meat, N-glycolylneuraminic acid, may contribute to inflammation and metabolic disease, offering new insight into dietary risks for diabetes.
A growing body of research suggests that diets high in red meat may carry a higher risk of type 2 diabetes, and a new preliminary study has added a possible biological explanation. The work, discussed by the European Association for the Study of Diabetes, focuses on N-glycolylneuraminic acid, a naturally occurring sugar compound found especially in red meat, and its possible link to inflammation and metabolic disease.
The study was led by Leopold Fezeu of Sorbonne University in France and drew on data from nearly 89,953 adults who did not have type 2 diabetes at the start. Over a median follow-up period of 7.2 years, researchers recorded 966 new cases of the disease. Participants with the highest intake of the compound were found to have a 63% higher risk of developing type 2 diabetes than those with the lowest intake, even after researchers accounted for age, sex, physical activity, smoking and overall diet quality.
According to the researchers, the human body cannot make N-glycolylneuraminic acid because of a genetic difference, although it is present naturally in most mammals and can enter the human diet through animal products, particularly beef and lamb, and in smaller amounts through dairy. The team said the body may treat the compound as foreign, triggering an immune response and chronic inflammation, a process scientists believe could help explain why certain dietary patterns are associated with long-term health problems.
The findings remain preliminary and do not prove that the compound directly causes diabetes. Because the study was observational, it can show association rather than causation. Still, it adds to wider evidence suggesting that reducing red meat intake, or replacing some of it with plant-based proteins, may be one practical way to lower diabetes risk, as other recent studies have also indicated.
Disclaimer: This content is for informational purposes only and is not intended to be a substitute for professional medical judgment, advice, diagnosis, or treatment.
