Shingles Vaccine Reduces Dementia Risk by 20% in Seniors

Older adults who received the shingles vaccine were 20% less likely to develop dementia over the next seven years than those who didn’t receive the vaccine. The corresponding study was published in Nature. 

Previous research based on health records suggests a link between the shingles vaccine and lower rates of dementia. These studies, however, suffered from a major source of bias: vaccinated people also tend to be more health conscious, meaning that…