causal
Analysis v1
Strong Support
Taking vitamin C supplements might cut your chances of getting a cold in half if you're under a lot of physical stress, like running marathons, skiing, or doing tough military training in cold weather.
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Evidence from Studies
Supporting (1)
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Community contributions welcome
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Vitamin C for preventing and treating the common cold.
Systematic Review With Meta-Analysis
2004 Oct 18The study looked at the same vitamin C use in the same high-stress groups and found exactly what the claim says: it cuts colds by half in those people.
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.