Garlic extract boosts immune function
6.0Moderate
evidence
evidence
The Claim
It is a common belief that garlic extract can enhance the immune system, helping to ward off illnesses such as the common cold and flu.
Origin
This belief is rooted in traditional use of garlic as a remedy for infections and its reputation as a 'natural antibiotic.'
What Science Says
Evidence from RCTs and systematic reviews suggests that garlic extract may have a mild immune-boosting effect, particularly in reducing the duration of cold symptoms. However, the effect is not consistent across all studies, and more high-quality research is needed to confirm these findings.
Verdict
Mostly True
Sources
- PMID:29576354 Aged garlic extract supplementation modifies inflammation and immunity of adults with obesity: A randomized, double-blind, placebo-controlled clinical trial.
- PMID:26764332 Aged Garlic Extract Modifies Human Immunity.
- PMID:22280901 Supplementation with aged garlic extract improves both NK and γδ-T cell function and reduces the severity of cold and flu symptoms: a randomized, double-blind, placebo-controlled nutrition intervention.