What the trial evidence does and doesn’t show for two commonly cited “anti-inflammatory” spices.
What the evidence says
- Ginger (Zingiber officinale): a meta-analysis of 16 randomized controlled trials (1,010 participants) found significant reductions in CRP, high-sensitivity CRP, and TNF-α, but no significant effect on IL-6[1]
- Ginger’s meta-analytic results carried high statistical heterogeneity (I² ~89–98%), so the effect sizes should be read cautiously and larger/longer trials are still needed[1]
- Proposed ginger mechanism: gingerols (e.g., 6-gingerol) suppress TNF-α production and dampen NF-κB and COX-2 signaling — background pharmacology, not a finding of the meta-analysis and not verified against an accessible source[1]
- Turmeric/curcumin: a meta-analysis of 19 randomized controlled trials (1,344 participants) found NO significant reduction in CRP, hs-CRP, IL-6, or TNF-α — oral curcumin’s poor bioavailability is a commonly cited limitation[2]
- Net picture: ginger has better (though heterogeneous) meta-analytic support for lowering inflammatory markers than turmeric/curcumin, whose marker effects are not established[1],[2]