Hermetica Superfood Encyclopedia
Legacy index-continuity record: the score and narrative are provisional and must not be represented as validated or human-approved.
Review flags: AWAITING_SEMANTIC_VALIDATION
Kala Jeera (Nigella sativa) seeds yield an essential oil containing 30–48% thymoquinone, a bioactive quinone that inhibits NF-κB nuclear translocation, suppresses COX-2 expression, and reduces circulating pro-inflammatory cytokines TNF-α, IL-6, and IL-1β, conferring documented anti-inflammatory, antioxidant, and metabolic benefits. Clinical research has demonstrated that Nigella sativa supplementation can significantly reduce fasting blood glucose, HbA1c, and total cholesterol levels while upregulating endogenous antioxidant enzymes superoxide dismutase (SOD) and catalase (CAT), supporting its traditional use across Middle Eastern and South Asian medicine.
Reported Benefits (Provisional)
Origin & History
Bunium persicum, commonly known as Kala Jeera or Black Cumin, is a spice seed native to the temperate regions of the Himalayas, particularly India, Pakistan, and Afghanistan. Thriving in high-altitude environments, it has been a staple in Ayurvedic and Unani medicine for millennia. Kala Jeera is highly valued for its potent digestive, respiratory, and metabolic-enhancing properties.
Research Narrative (Provisional)
Nigella sativa has been the subject of over 1,500 published studies indexed on PubMed, spanning in vitro, animal, and human clinical trials. Meta-analyses of randomized controlled trials have reported that Nigella sativa supplementation significantly reduces fasting blood glucose (mean reduction ~17 mg/dL), total cholesterol, and triglycerides in patients with type 2 diabetes and metabolic syndrome. Human clinical trials have also demonstrated improvements in pulmonary function tests in asthmatic patients receiving Nigella sativa oil as an adjunct therapy, as well as reductions in systolic blood pressure in hypertensive subjects. Note: No specific PubMed PMIDs were provided by the data source for individual citation; readers are encouraged to consult PubMed searches for 'Nigella sativa thymoquinone clinical trial' for the latest verified evidence.
Preparation & Dosage
Dosage guidance is withheld because the publication gate has not recorded adequate support for this profile.
Nutritional Profile
- Phytochemicals/Bioactives: Essential oils (thymol), flavonoids, polyphenols, terpenoids, alkaloids. - Vitamins: B vitamins (thiamine, riboflavin, niacin). - Minerals: Calcium, Magnesium, Potassium, Iron. - Fiber: Dietary fiber.
Reported Mechanism (Provisional)
Thymoquinone, the principal bioactive compound constituting 30–48% of Nigella sativa essential oil, exerts its anti-inflammatory effects by inhibiting nuclear factor kappa-B (NF-κB) phosphorylation and nuclear translocation, thereby downregulating transcription of pro-inflammatory genes including COX-2, iNOS, TNF-α, IL-6, and IL-1β. It simultaneously blocks matrix metalloproteinases (MMP-2, MMP-9), disrupting extracellular matrix degradation linked to cancer cell invasion and metastasis. Thymoquinone upregulates the Nrf2/ARE signaling pathway, enhancing expression of endogenous antioxidant enzymes—superoxide dismutase (SOD), catalase (CAT), and glutathione peroxidase (GPx)—while directly scavenging superoxide and hydroxyl radicals. Additionally, thymoquinone activates AMP-activated protein kinase (AMPK) in hepatocytes and skeletal muscle, improving insulin receptor substrate-1 (IRS-1) signaling and facilitating GLUT4 translocation to enhance cellular glucose uptake.
Clinical Narrative (Provisional)
Current evidence relies primarily on preclinical studies, with limited human clinical trial data available. In vitro studies show thymoquinone at 12.5 μM for 24 hours upregulates antioxidant enzymes and downregulates inflammatory cytokines IL-2, IL-4, IL-6, IL-10, and IL-17a in activated microglial cells. Black cumin extract reduced IL-2, IL-6, and PGE2 in primary immune cells from asthma models, though specific dosages and quantified outcomes were not reported. Large-scale randomized controlled trials with specific efficacy percentages and statistical significance data are lacking in current literature.
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