Gum disease linked to increased type 2 diabetes risk

An international research team, coordinated by scientists in Portugal, has identified a significant link between periodontal disease and an increased risk of developing type 2 diabetes. The analysis, which reviewed 28 studies across 16 countries involving over 300,000 people, suggests that oral health and metabolic health are closely interconnected.

In several specific longitudinal studies following approximately 29,000 participants for up to 20 years, individuals with periodontitis faced an 18-25% higher risk of being diagnosed with type 2 diabetes. Furthermore, participants who had already lost all their teeth showed a 30% higher risk of developing the condition.

Researchers hypothesize that the chronic inflammation caused by periodontitis may allow bacteria and inflammatory molecules to enter the bloodstream, affecting insulin response. Conversely, diabetes can impair tissue healing and the body's ability to fight infections, increasing vulnerability to gum disease. The study, published in The Lancet, emphasizes that these findings demonstrate an association rather than a direct cause-and-effect relationship.