health · 3 outlets · 3 linked reports
Shingles Vaccine Tied to Lower Dementia Risk in New Studies
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Summary
- A 2026 study in Annals of Internal Medicine of more than 500,000 adults 66 and older found those vaccinated against shingles had a 24% lower relative risk of dementia over four years.
- Research presented at the American Academy of Neurology's 2026 meeting similarly reported a roughly 20% reduction in new dementia diagnoses over seven years.
- Scientists caution the findings show association, not proof of cause, and say randomized trials are still needed.
The question
Widespread shingles vaccination could be a powerful tool against dementia.
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