Lacy ME, et al. - Authors gauged the association of long-term glycemic control with dementia in older individuals with type 1 diabetes. The patients included in this trial were ≥50 years. They ascertained the repeated measurements of hemoglobin A_1c (HbA_1c), dementia diagnoses, and comorbidities from health records. Among older patients with type 1 diabetes, increased dementia risk was seen in those with majority exposure to HbA_1c 8–8.9% and ≥9%. Reduced risk was seen in those with majority exposure to HbA_1c 6–6.9% and 7–7.9%. For older patients with type 1 diabetes, currently recommended glycemic targets are consistent with healthy brain aging.