The Alzheimer’s society describes dementia as ‘a set of symptoms which include loss of memory, mood changes and problem with communication and reasoning.
There are many types of dementia. The two most common, according to the Alzheimer’s Association, are Alzheimer’s desease and vascular dementia.
- Alzheimer Disease.
Scientist do not yet understand the causes of Alzheimer’s disease, the most common type of dementia. They think that abnormal protein structures, called ‘plague and tangles’, are responsible for nerve cell death.
- Vascular Dementia
Vascular dementia occurs when blood flow to the brain is diminished, starving cells of oxygen and nutrients. It is usually caused by a major stroke or a series of small strokes. For this reason, vascular dementia is deemed to be the most preventable because it closely linked to the heart and blood vessels.