Shingles Vaccine May Cut Dementia Risk by 20 Percent

A new UK-based study suggests the herpes zoster vaccine could play a surprising role in protecting brain health

Apr 06, 2025

∙ Paid

Topline

A large-scale natural experiment from Stanford, using UK vaccine policy data, found that the live-attenuated shingles vaccine (Zostavax) was associated with a 20% relative reduction in dementia diagnoses over seven years. This unexpected finding could introduce a new, low-risk tool in the fight against age-related cognitive decline.

Study Details

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