Echinacea prevents the common cold
5.0Limited
evidence
evidence
The Claim
Many people believe that taking echinacea supplements can prevent the onset of the common cold. This belief is based on the idea that echinacea boosts the immune system, making it more resistant to viral infections.
Origin
The myth likely originates from traditional Native American medicine and was popularized by supplement marketing and early small-scale studies suggesting immune benefits.
What Science Says
Research on echinacea's effectiveness in preventing colds is mixed. A 2014 meta-analysis in the Cochrane Database found that echinacea products may slightly reduce the risk of catching a cold, but results are inconsistent across studies. Variability in echinacea species, preparation methods, and dosages tested complicate definitive conclusions.
Verdict
Partially True