Spiny Norman said:

For decades, scientists have known that there was a weird link between shingles and dementia. But recent studies have made the connection clearer than ever—and established that the shingles vaccine may prevent the cognitive decline.

https://www.youtube.com/watch?v=tqnBeuWoOEk

Have you had the shingles vaccination?

One is meant to be better that the other than the other dementia wise.