“APOE does not act alone in causing Alzheimer’s or other dementias. Even among people with two ε4 copies, the highest risk group, the lifetime risk of developing Alzheimer’s remains below 70%.”
“Most people with genetic risk factors like APOE ε3 and ε4 won’t get dementia in a typical lifetime, since there are complicated interactions at play with other contributing genetic and environmental risk factors.”
Encouraging, but those two paragraphs are contradictory as far as the odds are concerned.
https://scitechdaily.com/scientists-say-one-gene-could-be-behind-up-to-93-of-alzheimers-cases/
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