Cognitive dysfunction in type 2 diabetes mellitus is associated with decrease in psychomotor speed, frontal lobe/executive function, verbal memory, processing speed, complex motor functioning, working memory, immediate recall. Although, type 2 diabetes is associated with several other vascular risk factors of dementia, diabetes itself has been implicated as an independent risk factor for cognitive impairment and dementia. The design was a prospective observation study to assess the cognitive function of diabetic patients treated with various classes of oral hypoglycemic with or without...