Shingles Vaccine Appears to Lower Dementia Risk - WSJ [View all]
Mounting evidence suggests that vaccination against the varicella zoster virus—which causes chickenpox in children and triggers shingles in adults—also protects the brain.
Several recent studies suggest that the vaccines reduce the risk of dementia in older adults, but key questions remain, including: How the vaccines might work to stop or delay the condition, and whether the benefit is limited to people of a certain age.
The vaccines studied, Zostavax and Shingrix, both appeared to offer protection.
The latest study found that among 70- and 80-year-olds in Australia, people who were eligible to get the Zostavax shot were 1.8 percentage points less likely to get a dementia diagnosis in the next 7.4 years than those who were ineligible. The study was published in the journal JAMA Wednesday.
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