6 Major Causes of Dementia, According to Science

Alzheimer's Disease

This is the most common cause of dementia, accounting for a significant majority of cases.

Vascular Dementia

This type of dementia occurs when there is reduced blood flow to the brain, often due to a stroke or other blood vessel-related problems.

Lewy Body Dementia

This is a progressive brain disorder characterized by the presence of abnormal protein deposits, called Lewy bodies, in the brain. 

Frontotemporal Dementia

This type of dementia is less common than Alzheimer's but is a significant cause of dementia in younger individuals. 

Parkinson's Disease

While primarily known as a movement disorder, Parkinson's disease can also lead to cognitive decline and dementia.

Huntington's Disease

This is a rare inherited disorder that causes the progressive breakdown of nerve cells in the brain.

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