correlational
Strong Support
Getting the shingles vaccine didn’t make people go to the doctor more for other things or change how often they were diagnosed with common long-term illnesses like diabetes or high blood pressure—so if people who got the vaccine had less dementia, it’s probably because the vaccine itself helped, not because they got better overall care.
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Evidence from Studies
Supporting (1)
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Community contributions welcome
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The study found that getting the shingles vaccine didn’t make people go to the doctor more for other things or change their other health conditions — yet it still lowered dementia rates. So the dementia drop was probably because of the shingles vaccine itself, not because people got better overall care.
Contradicting (0)
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No contradicting evidence found
Gold Standard Evidence Needed
According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.