Big effect
Black cumin supplements cut TNF-alpha by an effect size of -1.27 in a meta-analysis — a large drop, but the dose that produced it wasn't reported.
This unusually large effect comes from a synthesis of three studies that all found benefit, but the missing dose details and the wide confidence interval (from -2.29 to -0.25) mean the result is promising rather than actionable.
TNF-alpha is a key inflammatory messenger; lowering it is linked to reduced inflammation in conditions like arthritis and metabolic syndrome. The analysis found a substantial reduction, but because the original studies didn't specify how much black cumin was taken, it's unclear what dose would be needed to replicate the effect.
Where this fits in the evidence
Pillser has synthesized 3 studies on Black Cumin for Reduced Tumor Necrosis Factor Alpha — overall evidence strength: Moderate.
Across all 3 studies (all meta-analyses), Black Cumin (Nigella sativa) supplementation consistently showed beneficial effects on reducing Tumor Necrosis Factor Alpha (TNF-α), with all 3 reporting statistically significant reductions. Effect sizes were predominantly moderate to large, and the strongest evidence (highest-rated study) used a dose range of 200 to 4600 mg/day over 7 days in a broad population of 5,026 participants, though limited duration data suggest effects may appear early. The evidence base is small and uniformly positive, raising concerns about publication bias.
The study
- Meta-Analysis
- 2025-01
- Prostaglandins & other lipid mediators
This is a plain-language summary of a research finding, not medical advice. Pillser surfaces research signals to help you decide what's worth investigating — always consult a qualified professional before changing what you take.