Myth: Vitamin C Prevents the Common Cold

It’s commonly believed that taking vitamin C can prevent or cure the common cold. This myth has been widely promoted through supplements, foods fortified with vitamin C, and general health advice. People often increase their vitamin C intake when they feel a cold coming on, hoping that it will either prevent them from getting sick or help them recover faster.

While vitamin C is an essential nutrient that plays a vital role in immune function, there is limited evidence to support the idea that it can prevent the common cold. Several studies have shown that vitamin C does not reduce the incidence of colds in the general population, though it may slightly shorten the duration of symptoms if taken regularly. A large review of studies published in the Cochrane Database found that while vitamin C supplementation can reduce the severity and duration of cold symptoms in some people, it doesn’t prevent them from catching the virus in the first place. In fact, the body does not store vitamin C, so it’s important to maintain a steady intake, but the belief that it will prevent colds is overstated. The best way to prevent a cold is through good hygiene practices, like washing hands frequently and avoiding close contact with infected individuals. Healthy habits like maintaining a balanced diet, getting enough sleep, and staying active also support the immune system.