Rawlings AM, et al. - Researchers examined how diabetes, glycemic control, diabetes duration, and biomarkers of hyperglycemia impact incident mild cognitive impairment (MCI) and incident dementia in older adults. A prospective analysis study of 5,099 participants from the Atherosclerosis Risk in Communities (ARIC) who attended the fifth (2011–2013) exam was carried out. Between HbA_1c, and incident dementia researchers found a J-shaped association. Incident dementia was also correlated with glycated albumin and fructosamine. Incident MCI correlated with HbA_1c and fructosamine. Over a median follow-up of 5 years, diabetes status, poor glycemic control, and longer diabetes duration were linked to worse cognitive outcomes.