Illustration of a healthy brain and a brain with Alzheimer's disease. On the right side is a brain with the Alzheimer's disease. Alzheimer's disease is a neurodegenerative disorder. It is the most common cause of dementia. Affected persons have protective intellectual deteriorations and behavioral changes. Special neurons are degenerated. The amount of brain is reduced. The brain on the bottom showes that. There are few neurotransmitters wich are blue on this picture.
