descriptive
Analysis v1
Strong Support
When scientists look at studies about vitamin D preventing colds and flu, it seems like some smaller studies showing vitamin D doesn't work might be missing. This could make vitamin D look more helpful than it really is.
45
0
Evidence from Studies
Supporting (1)
45
Community contributions welcome
45
Vitamin D supplementation to prevent acute respiratory infections: systematic review and meta-analysis of stratified aggregate data
Systematic Review With Meta-Analysis
The study looked at vitamin D for cold prevention and found evidence that small studies showing no benefit might be missing, which matches the claim. This means earlier reports may have made vitamin D seem more helpful than it really is.
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.