Shingrix Shingles Vaccine May Reduce Dementia Risk by 24% in Older Adults

A large observational study of more than 500,000 adults found that those who received the Shingrix shingles vaccine were 24% less likely to receive a dementia diagnosis over a four‑year follow‑up period. Researchers estimate that this reduction translates to roughly one dementia case prevented for every 17 people vaccinated. The analysis suggests a potential protective effect of the shingles vaccine against cognitive decline, though the study design limits definitive causal conclusions. The findings highlight a possible additional benefit of routine shingles vaccination for older adults.