Findings from a King’s College London study indicate that people not following a Mediterranean-style diet tended to have more severe gum disease, especially if they consumed red meat frequently.

In these patients, the researchers observed higher levels of circulating inflammatory markers, such as Interleukin-6 (IL-6) and C-reactive protein (CRP).

However, patients whose diets were rich in plant-based food which are typical of a Mediterranean diet, such as legumes, vegetables, fruits and olive oil, showed lower levels of various inflammatory markers.

The research, published in the Journal of Periodontology, evaluated 200 hospital patients enrolled in the King’s College London Oral, Dental and Craniofacial Biobank by performing dental exams, taking blood samples, and asking them about their diets through questionnaires.

The Mediterranean diet is known for its emphasis on fruits, vegetables, whole grains, and healthy fats. It has been associated with a lower risk of developing major diseases, including cardiovascular diseases, neurodegenerative disorders, and certain cancers.

There is substantial evidence showing that diet might play a role on human health by affecting the immune system and moderating inflammation.

Dr Giuseppe Mainas, first author of the study and a postdoctoral researcher at King’s College London, said: “Our findings suggest that a balanced, Mediterranean-type diet could potentially reduce gum disease and systemic inflammation. We observed that there may be a connection between periodontal disease severity, diet, and inflammation. These aspects should be holistically considered when assessing the treatment for periodontitis in patients. Our research offers an important starting point that can lead to more research to better understand the relationship between foods intake and gum disease.”

The study is published in the Journal of Periodontology.

From: https://www.sciencedaily.com/releases/2025/09/250915202841.htm