Inequalities in type 2 diabetes incidence in a multiethnic population: a cohort study investigating the impact of ethnicity, migration and mental health comorbidities
Authors' conclusion
Ethnicity, migration status and mental health conditions were each independently associated with type 2 diabetes risk, and ethnic disparities persisted after adjustment.
Study context
- Population
- Adults without baseline T2D registered with primary care centres in South London, 2012–2019
- Participants
- ≈340,000 adults
- Exposure
- Ethnic groups vs White British; born outside UK vs UK-born; mental health conditions
- Outcome
- Incident T2D
Methodological detailsprimary care centres in South London, Cox proportional hazards models with sequential adjustment
- Primary care centres in South London
- Cox proportional hazards models with sequential adjustment
Main finding
As reported in the abstract
T2D risk by ethnicity
- South Asian, Black African and Black Caribbean groups had 2-3-fold higher T2D risks vs White British, only partially explained by socioeconomic and clinical factors
Observational data: associations, not effects.
Further findings
Migration status (born outside UK)
- Being born outside the UK increased T2D risk across all ethnic groups
- 29%
Mental health conditions
- Depression/anxiety and severe mental illness were associated with a higher risk of T2D
Interactions
- No statistical evidence of strong interactions between these factors
Original publication
Inequalities in type 2 diabetes incidence in a multiethnic population: a cohort study investigating the impact of ethnicity, migration and mental health comorbidities. Diabetologia. Published 22 April 2026. doi:10.
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