Getting the shingles shot might help keep your memory sharper for a little while—especially in the first year after you get it—but that benefit slowly fades over six years, like a temporary shield against dementia, not a permanent fix.

The study says the shingles vaccine is linked to less dementia over six years, but it doesn’t say whether the protection is strongest right after the shot and fades over time — which is what the claim says. So we can’t tell if the claim is right.