Black Seed Oil (Nigella sativa): Clinical Evidence & Substantiation Summary
What Is Black Seed Oil (Nigella sativa)?
Black seed oil from Nigella sativa has been used in traditional medicine for over 2,000 years. Its active compound thymoquinone has demonstrated anti-inflammatory, antioxidant, and immunomodulatory effects across a growing body of clinical trials.
Mechanism of action: Thymoquinone activates AMPK, inhibits NF-κB and NLRP3 inflammasome, and modulates Th1/Th2 immune balance. It reduces inflammatory eicosanoids via COX and LOX inhibition and enhances Nrf2-mediated antioxidant gene expression.
Clinical Evidence Summary
Below are 3 key clinical studies on Black Seed Oil (Nigella sativa). Nutra Comp analyses 26+ studies in its full clinical evidence report.
Nigella sativa and metabolic syndrome: a meta-analysis
Population: 13 RCTs, 875 participants
Key finding: Black seed supplementation significantly reduced body weight (WMD: -2.1 kg), fasting glucose (WMD: -17.8 mg/dL), and total cholesterol (p<0.001).
Nigella sativa for immune modulation
Population: 16 clinical studies
Key finding: Black seed enhanced natural killer cell activity and balanced inflammatory/anti-inflammatory cytokine ratios in multiple clinical populations.
Thymoquinone and inflammatory markers: a meta-analysis
Population: 8 RCTs
Key finding: Thymoquinone supplementation significantly reduced CRP (WMD: -1.58 mg/L, p=0.002) and TNF-α levels in inflammatory conditions.
Evidence-Based Structure–Function Claims
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Frequently Asked Questions
Is black seed oil FDA approved?
Black seed oil is a dietary supplement under DSHEA. It does not require FDA approval. It has a long history of traditional use across multiple cultures.
What are the most studied benefits?
The strongest evidence supports black seed oil for metabolic syndrome parameters (weight, glucose, cholesterol), immune modulation, and anti-inflammatory effects.
What dosage is used in clinical studies?
Most studies use 1–3 g/day of black seed oil or 200–500 mg/day of standardised thymoquinone extract.
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