Prediabetes in Ontario: improving surveillance for better disease prevention
Authors' conclusion
Prediabetes incidence and prevalence increased substantially in Ontario between 2015 and 2024, with a disproportionate burden in lower socioeconomic and urban communities
Study context
- Population
- Individuals aged 20–105 years in Ontario with valid glucose testing, Ontario Laboratories Information System (2015–2024); results in the diabetes range excluded
- Outcome
- Incidence and prevalence of prediabetes (HbA1c 6.0% and 6.4%, IGT: 2-hour glucose 7.8-11.0 mmol/L after 75 g OGTT, or IFG 6.1-6.9 mmol/L)
- Follow-up
- 2015-2024
Methodological detailspopulation-level, laboratory-based
- Population-level
- Laboratory-based
Main finding
As reported in the abstract
2015 to 2024
- Age-standardized incidence, 2015
- 15.2 per 1,000 persons
- Age-standardized incidence, 2024
- 18.2 per 1,000
- Increase in incidence
- 20%
- Prevalence, 2015
- 11%
- Prevalence, 2024
- 14%
- Increase in prevalence
- 25%
Observational data: associations, not effects.
Further findings
Incidence and prevalence by sex
- Increases observed in both sexes
Incidence and prevalence by socioeconomic status and urban location
- Incidence and prevalence higher in socioeconomically disadvantaged and urban communities
Original publication
Prediabetes in Ontario: improving surveillance for better disease prevention. Diabetes Res Clin Pract. Published 6 June 2026. doi:10.
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