Evidence-based nutrition, in plain English — every entry sourced from clinical research.

Vitamin C reduces the severity of common colds: a meta-analysis

BMC public health, 2023 · Meta-analysis

Across the trials reviewed, vitamin C at 1 g/day or more reduced common-cold severity by about 15%, with the effect concentrated on more severe symptoms.

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A note on health content. This article is for general information and is not a substitute for professional medical or dietetic advice. Where we cite research, links to the original papers are provided so you can read the evidence yourself.

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