If a family of a patient with Alzheimer's disease asks the nurse what causes this condition, an appropriate response would be that evidence shows that there are changes in nerve cells and brain chemicals .
The continuous accumulation of proteins around brain cells and inside them is considered and ruled out to be the definite cause of Alzheimer's disease. Plaques encircling brain cells are made of amyloid protein, one of the involved proteins. Another protein which is known as tau, and deposits/collections of it cause tangles in the brain cells.
There are numerous disorders that appear to enhance the likelihood of acquiring Alzheimer's or vascular dementia. These include excessive blood pressure, diabetes, heart disease, stroke, and high cholesterol.
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