Vaccines, esp Zoster, lower dementia and cardiovascular risks: “many infections are associated with the onset of dementia, both Alzheimer’s and vascular”

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https://www.nytimes.com/2026/01/03/health/vaccines-dementia-heart-elderly.html

COVID really drove this home because of the scale of simultaneous infections, but many suspected before. Many vital infections damage vessels and can involve the brain.

OTOH – extremely hard to study as most vaccine avoiders are not terribly bright.