Research Links Shingles Vaccine to Lower Dementia Risk
Research Links Shingles Vaccine to Lower Dementia Risk
Updated at: August 26, 2026 at 12:15 AM
Exciting new research suggests a potential link between the shingles vaccine and a reduced risk of dementia.
Several large-scale studies conducted in countries like the U.S., UK, and Australia have consistently shown that individuals who receive the shingles vaccine may have a 20% to 24% lower risk of developing dementia compared to those who do not.
The modern recombinant vaccine, Shingrix, appears particularly effective.
One idea is that the vaccine prevents the reactivation of the dormant varicella-zoster virus, which might otherwise cause harmful brain inflammation.
Another theory involves 'trained immunity,' where the vaccine helps the immune system better handle other health threats.
Additionally, components of the vaccine might provide direct neuroprotective benefits.
While these findings are very encouraging, scientists emphasize that large-scale, randomized controlled trials are necessary to confirm if the vaccine directly causes these protective effects.
This research opens a promising path toward using accessible vaccines to protect long-term brain health.
