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DS carries a 40% risk of developing Alzheimer's. This seems to be due to the fact
that:
 | The gene for Alzheimer's is located on the 21st chromosome |
 | Hydrogen Peroxide (from the overexpressed SOD cycle)
damages cells |
 | Endocrine abnormalities |
 | Reduced acetylcholine receptors in the brain |
Current estimates are that over 50% of adults with DS will develop MRI evidence of
Alzheimer's disease by 45.
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