Type 2 & other diabetes

Diabetes, antidiabetic medications and risk of dementia: A systematic umbrella review and meta‐analysis

Diabetes Obes MetabPublished Systematic umbrella review and meta-analysis

Authors' conclusion

Metformin, thiazolidinediones, pioglitazone, GLP1RAs and SGLT2is were associated with reduced risk of dementia. More longitudinal studies aimed at determining their relative benefit in different populations should be conducted.

Study context

Population
Individuals with diabetes; reviews searched until 2 July 2023100 reviews, 27 cohort/case-control studies
Participants
3,046,661 individuals
Comparison
Antidiabetic medications and risk of dementia
Outcome
Risk of dementia
Methodological detailsrandom-effects meta-analyses, cohort/case-control studies, Risk of bias assessed with AMSTAR tool and Newcastle-Ottawa Scale
  • Random-effects meta-analyses
  • Cohort/case-control studies
  • Risk of bias assessed with AMSTAR tool and Newcastle-Ottawa Scale

Pooled result

As reported in the abstract

  • Metformin, thiazolidinediones, pioglitazone, GLP1RAs and SGLT2is associated with significant reduction in risk of dementia
  • No significant effect for DPP-4i, α-glucosidase inhibitors or insulin
  • Meglitinides and sulphonylureas associated with increased risk

Further pooled results

Metformin by country and world region

By country, only significant effect for the United States
Significant in Western but not Eastern populations

Original publication

Diabetes, antidiabetic medications and risk of dementia: A systematic umbrella review and meta‐analysis. Diabetes Obes Metab. Published 23 October 2023. doi:10.1111/dom.15331

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