For decades, many people have believed that taking large doses of vitamin C can prevent the common cold. The idea became popular more than 50 years ago after Nobel Prize winner Linus Pauling promoted high-dose vitamin C. However, research since then suggests that vitamin C does not prevent most people from catching a cold. There is, however, a small potential benefit. Regular vitamin C intake may slightly reduce how long a cold lasts or make symptoms somewhat milder, particularly in some people. This means vitamin C can be part of a healthy diet, but it should not be viewed as a guaranteed shield against infections. A balanced diet and good general health remain more important for supporting the immune system.
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