Health behavior changes after type 2 diabetes diagnosis: a 16-year longitudinal cohort study
Authors' conclusion
A diabetes diagnosis was associated with favorable changes in physical activity and weight management, serving as a critical window of opportunity for lifestyle intervention.
Study context
- Population
- Participants without diabetes at baseline, Korean Genome and Epidemiology Study (2003–2018)
- Participants
- 5,091 participants
- Exposure
- Incident diabetes vs no diabetes
- Outcome
- 16-year trajectories of smoking, drinking, exercise and obesity before and after diabetes diagnosis
- Follow-up
- 16 years
Methodological detailscommunity-based, longitudinal, biennial health examinations, generalized estimating equations
- Community-based
- Longitudinal
- Biennial health examinations
- Generalized estimating equations
Main finding
As reported in the abstract
Group-by-time interactions in health behaviours
- No significant group-by-time interactions for smoking and drinking
- Diabetes vs Without diabetes: group-by-time interaction, P = 0.035
- Diabetes vs Without diabetes: P < 0.001
Observational data: associations, not effects.
Further findings
Overall temporal trends across the cohort
- Reduction in smoking
- P < 0.001
- Reduction in drinking
- P < 0.001
- Reduction in obesity
- P = 0.007
- Increase in exercise
- P < 0.001
Original publication
Health behavior changes after type 2 diabetes diagnosis: a 16-year longitudinal cohort study. Diabetes Res Clin Pract. Published 14 June 2026. doi:10.
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