Myth: Vitamin C Prevents Colds

A popular belief is that taking high doses of vitamin C can prevent or cure the common cold, leading people to increase their vitamin C intake during cold and flu season.

Studies, including those published in The Cochrane Database of Systematic Reviews, show that while vitamin C may reduce the duration of a cold slightly, it does not prevent colds in the general population. Regular vitamin C intake supports immune function, but there is no evidence that it prevents colds. Instead, balanced nutrition, hand hygiene, and rest are more effective preventive measures. Understanding the true role of vitamin C can help manage expectations and encourage more comprehensive health practices during cold seasons.