Which type of dementia is often caused by blood flow problems to the brain?

Vascular dementia is specifically linked to blood flow issues in the brain, which can result from conditions such as stroke or other cardiovascular problems that reduce the supply of oxygen and nutrients to brain cells. This type of dementia occurs due to the damage to brain cells caused by inadequate blood flow, leading to issues with memory, reasoning, and other cognitive functions. Unlike Alzheimer's disease, which is primarily characterized by amyloid plaques and tau tangles, or frontotemporal dementia, which affects the lobes of the brain that control personality and behavior, vascular dementia is distinctly tied to vascular health.

Mixed dementia, while it involves aspects of both vascular dementia and Alzheimer's disease, does not solely focus on the blood flow problems; instead, it's characterized by the presence of multiple types of dementia-related pathology occurring simultaneously. Thus, vascular dementia is the most accurate answer regarding dementia caused directly by problems with blood circulation to the brain.