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
Banaba leaf (Lagerstroemia speciosa) contains corosolic acid and ellagitannins that enhance glucose uptake by stimulating insulin receptor phosphorylation and inhibiting digestive enzymes α-amylase and α-glucosidase. Clinical trials demonstrate significant reductions in blood glucose, with metabolic syndrome remission occurring in 67% of patients compared to zero in placebo groups.
Reported Benefits (Provisional)
Origin & History
Banaba Leaf (Lagerstroemia speciosa) is a medicinal plant native to Southeast Asia and the Philippines. Its leaves are traditionally valued for their functional benefits, particularly in supporting healthy blood sugar metabolism and offering antioxidant protection.
Research Narrative (Provisional)
Multiple human clinical trials, including randomized controlled trials, have demonstrated Banaba leaf extract's efficacy in lowering blood glucose levels and improving insulin sensitivity in individuals with type 2 diabetes or impaired glucose tolerance. Research consistently highlights corosolic acid as the primary bioactive compound responsible for these effects.
Preparation & Dosage
Dosage guidance is withheld because the publication gate has not recorded adequate support for this profile.
Nutritional Profile
- Corosolic Acid: A triterpenoid compound that enhances glucose uptake and insulin sensitivity. - Flavonoids: Potent antioxidants with anti-inflammatory properties. - Tannins: Contribute to astringent and antimicrobial effects, supporting gut health. - Ellagitannins: A class of tannins with antioxidant and potential anti-diabetic properties.
Reported Mechanism (Provisional)
Corosolic acid stimulates insulin receptor phosphorylation and mimics insulin effects, enhancing cellular glucose uptake within 60 minutes. Ellagitannins including lagerstannins and valoneic acid lactone inhibit α-amylase (IC₅₀ ≈ 108 μg/mL) and α-glucosidase, reducing glucose absorption from carbohydrates. These compounds modulate PPAR, MAPK, and NF-κB signaling pathways while inhibiting adipocyte differentiation in fat cells.
Clinical Narrative (Provisional)
A randomized, double-blind, placebo-controlled trial with 24 metabolic syndrome patients showed banaba achieved 67% remission rates versus 0% for placebo, with significant reductions in systolic blood pressure (P=0.017), fasting glucose, and insulin secretion. Multiple human clinical trials demonstrate consistent blood glucose lowering effects in type 2 diabetes and impaired glucose tolerance patients. A 12-week lifestyle intervention study with 56 subjects confirmed antidiabetic benefits when combined with diet and exercise. The evidence base includes both randomized controlled trials and observational studies, providing moderate-quality evidence for glucose regulation.
Also Known As
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