APOE4 Carriers: This Common Shot May Cut Dementia Risk
Originally published on YouTube on 5 August 2026.
Original video: https://www.youtube.com/watch?v=yMWdfTwbRS8
A shingles vaccination program in Wales became a natural experiment in dementia risk. I walk through the evidence, the independent replication in Australia, the newer Shingrix findings, and the unanswered questions for APOE4 carriers.
Why might a rash shot touch your brain? Two competing theories are suppressing a hidden virus and trained immunity. No study in this episode tested the effect specifically in APOE4 carriers, the stronger-in-women pattern did not replicate everywhere, and…
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