Global type 1 diabetes prevalence, incidence, and mortality estimates 2025: Results from the International diabetes Federation Atlas, 11th Edition, and the T1D Index Version 3.0
Authors' conclusion
The number of global T1D cases is rising quickly, especially in lower-income settings, due to increasing diagnosed incidence, falling mortality and ageing, and population growth. Contemporary data are unavailable for over 50% of all countries, highlighting need for epidemiological studies.
Study context
- Population
- 202 countries/territories; IDF Atlas 11th Edition/T1D Index Version 3.0202 countries/territories
- Outcome
- Estimated global T1D prevalence, incidence and mortality
- Follow-up
- 2025, projected to 2040
Methodological detailsMarkov model with sub-models for incidence-over-time, adult incidence and mortality-over-time, data extrapolated for countries without studies
- Markov model with sub-models for incidence-over-time, adult incidence and mortality-over-time
- Data extrapolated for countries without studies
Main finding
As reported in the abstract
Global T1D estimates · 2025
- People living with T1D globally
- 9.5 million
- People living with T1D in 2021
- 8.4 million
- Increase since 2021
- 13 %
- Prevalent cases aged 0-14
- 1.0 million
- Prevalent cases aged 15-19 years
- 0.8 million
- Incident cases in 2025
- 513,000
- Incident cases aged 0-14
- 164,000
- Incident cases aged 15-19 years
- 58,000
- Incidence increase in the last year
- 2.4 %
- Premature deaths
- 174,000
- Premature deaths due to non-diagnosis soon after clinical onset
- 17.2 %
Further findings
Prevalent cases in lower-income countries · 2021 to 2025
- Increase
- 20 %
- 2021
- 1.8 million
- 2025
- 2.1 million
Remaining life expectancy of a 10-year-old diagnosed with T1D in 2025
- Range between countries
- 6 to 66 years
Data availability
- Countries with no data available
- 119
Projected T1D population · 2040
- Projected people with T1D
- 14.7 million
Original publication
Global type 1 diabetes prevalence, incidence, and mortality estimates 2025: Results from the International diabetes Federation Atlas, 11th Edition, and the T1D Index Version 3.0. Diabetes Res Clin Pract. Published 22 May 2025. doi:10.
Composed by AI from the published abstract and checked against it. How Briefs are made →