correlational
Analysis v1
Strong Support
People aged 50 to 74 who have high or low levels of vitamin D in their blood before getting the flu shot tend to have about the same level of antibody response after the shot—vitamin D doesn’t seem to make a difference.
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0
Evidence from Studies
Supporting (1)
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Community contributions welcome
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Vitamin D, leptin and impact on immune response to seasonal influenza A/H1N1 vaccine in older persons
Cross-Sectional Study
Human
2016 Mar 3The study checked if people’s vitamin D levels before getting the flu shot affected how well their body made antibodies afterward — and found no link. So, vitamin D levels don’t seem to change how well the flu vaccine works in older adults.
Contradicting (0)
0
Community contributions welcome
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.