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.

33
Pro
0
Against

Evidence from Studies

Supporting (1)

33

Community contributions welcome

33

Vitamin C for preventing and treating the common cold.

Systematic Review With Meta-Analysis
2004 Oct 18

The 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.