The Claim
Vitamin C supplementation reduces severe common cold symptoms by 26% compared to mild symptoms, which show no significant effect, based on direct comparison across 5 trials involving 2753 cold episodes, with a statistically significant difference (P=0.002).
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
Vitamin C helps reduce bad cold symptoms a lot (by about a quarter), but doesn't really help with mild cold symptoms. This is based on studies of over 2700 colds.
See the scientific wording
Vitamin C has a greater effect on severe common cold symptoms (26% reduction) than on mild symptoms (no significant effect), based on direct comparison in 5 trials with 2753 cold episodes, with a significant difference (P=0.002).
What the research says
1 studyStudy: Vitamin C reduces the severity of common colds: a meta-analysis
The study shows vitamin C helps more with bad cold symptoms than mild ones, just like the claim says.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.