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What causes Alzheimer's disease?

For the majority of cases, it is not known why some people develop Alzheimer's disease. Most cases are not caused by known changes in genes. People with Alzheimer's disease have been shown to have abnormal levels of the proteins amyloid and tau, which build up and damage connections between neurons, with the neurons eventually dying and the brain shrinking.

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About this article

Author: Dr Nikki Wallis PhD, BSc
First answered: 28 Nov 2014
Last reviewed: 19 May 2018
Rating: 4.8 out of 5
Votes: 1066 (Click smiley face below to rate)
Category: Dementia

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