Zinc cures the common cold
evidence
The Claim
Many people believe that taking zinc supplements can completely cure the common cold or significantly shorten its duration. This belief is fueled by the idea that zinc boosts the immune system and helps fight off infections.
Origin
This myth often originates from initial studies that suggested zinc could reduce cold symptoms, as well as from marketing claims made by supplement companies.
What Science Says
Research indicates that zinc can reduce the duration of cold symptoms when taken within 24 hours of onset, but it does not cure the cold itself. A meta-analysis found that zinc lozenges can reduce the duration of colds by about 33% on average, but this is not equivalent to a cure. However, the effectiveness of zinc varies based on dosage and formulation.
Verdict
Partially True