There are different types of dementia, and diabetes has been associated with some types of them. Diabetes is most often associated with “vascular dementia,” which occurs because of reduced or blocked blood flow to parts of the brain, which is also the process that causes strokes. People with diabetes have a higher chance of suffering from Alzheimer’s disease, as they too suffer from changes in the functioning of the brain. Drastic changes in brain functioning are some of the major characteristics of Alzheimer’s disease.