What question did this study set out to answer?

This study aims to investigate the relationship between periodontal status and the incidence of metabolic syndrome.

Association of periodontitis with incidence of metabolic syndrome in Korea: A retrospective cohort study

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Retrospective cohort study finds periodontitis increases metabolic syndrome risk in older adults, implying age-related factors.

This study aims to investigate the relationship between periodontal status and the incidence of metabolic syndrome.
Analyzed data from the National Health Insurance Service-Health Screening cohort (2009-2019) with 43,713 participants aged ≥40 years.
Periodontitis assessed using diagnostic codes and treatment procedures.
Cox proportional hazards models examined the association of baseline periodontitis with metabolic syndrome incidence.
Individuals with severe periodontitis had a HR of 1.10 (95% CI: 1.05-1.16) for developing metabolic syndrome compared to those without.
In individuals aged 50-59 years, HR was 1.16 (95% CI: 1.10-1.23), indicating a strong age-related effect.
The interaction between age and periodontal severity was significant (p for interaction = 0.015).

Hwang et al. (2026) studied this question.

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