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-   -   Alzheimer's Disease Primer (https://www.neurotalk.org/alzheimer-s-disease/215866-alzheimers-disease-primer.html)

Feck 02-08-2015 10:30 PM

Alzheimer's Disease Primer
 
Since discussion of Alzheimer's is a sensitive topic, I have added the trigger icon. Use your discretion before wading in, please.

Quote:

Age is the most important risk factor for Alzheimer's disease. The number of people with the disease doubles every 5 years beyond age 65.
The Alzheimer's Series: http://psychcentral.com/disorders/alzheimers/

kiwi33 06-30-2015 09:18 PM

Generally I agree with your quote though genetic risk factors are also important. Differences in about 20 genes (probably there are many more) have been shown to be risk factors though none of these have yet led to new therapeutic insights.

With age there is a progressive accumulation of misfolded proteins (notably Abeta and Tau) in the brain. There is good evidence that these misfolded proteins are causal of AD, though how is still poorly understood.

There is a dose-response relationship here - a 40 y.o. will have relatively low levels of these misfolded proteins and so is unlikely to present with symptoms of AD but an 80 y.o. will have relatively high levels of them and so is far more likely to show signs of AD.


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