Several previous studies have suggested that shingles vaccinations might reduce dementia risk, but most could not exclude the possibility that people who get vaccinated might have other dementia-protective characteristics, like healthier lifestyles, better diets or more years of education.

The findings add to a growing body of evidence that the shingles vaccine may help keep dementia at bay – but researchers still need to prove it. View on euronews

A study of over 280,000 adults found that the shingles vaccine reduced dementia risk by 20%, with a stronger effect in women.