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Type 2 diabetes is a risk factor for dementia. In this study, researchers analyzed data from Taiwan's National Health Insurance Research Database (NHIRD) to assess whether treatment for type 2 diabetes affected dementia risk in adults ≥60 years old with type 2 diabetes mellitus on treatment. Diabetes diagnosis, type of anti-diabetic medication used, and dementia classification were based on NHIRD records. Participants were divided into metformin users and those who never took metformin. Covariates included age, sex, income, urbanization level, other medications, diabetes severity, co-existing medical conditions and co-morbidities, smoking, and time interval from diabetes diagnosis to last follow-up date.
Among 14,558 participants, the averag…