AO, at the present time Alzheimer’s is terminal, and life spans are short. I just learned that Vascular Dementia is not terminal, Microvascular ischemic damage (the small blood vessels that deliver blood to the brain) is permanent, there are several types of medication that can slow down the process. Longevity of those diagnoses with Vascular Dementia have variable life spans dependent on the age at the onset and the health condition of the patient. many Vascular Dementia patients died of other causes.