G etting vaccinated for the viral illness shingles, which causes a painful rash, could potentially be the next best tool in preventing dementia, a new study published in Nature fi

Receiving the live-attenuated zoster vaccine (Zostavax) reduced the probability of a new dementia diagnosis by 3.5 percentage points (95% CI 0.6-7.1, P =0.019) over a 7-year period, which corresponded to a 20% (95% CI 6.5-33.4) relative reduction, reported Pascal Geldsetzer, MD, PhD, of Stanford University in California, and co-authors.