Type 1 diabetes associated with higher risk of dementia

Having type 1 diabetes is associated with a higher risk of developing dementia, according to a study published March 18, 2026, in Neurology. Type 2 diabetes is also associated with a higher risk of dementia compared with not having diabetes. This study shows an association and does not prove that diabetes causes dementia. Type 1 diabetes is rare, accounting for about 5% of diabetes cases.