Herbs (Global Traditional) · Ayurveda
Shigru (Moringa oleifera) (Moringa oleifera)
Strong Evidencebotanical
Hermetica Superfood Encyclopedia
Moringa oleifera contains isothiocyanates and quercetin that improve glucose metabolism and reduce inflammatory markers. Clinical studies show significant reductions in fasting blood glucose and HbA1c levels in diabetic patients.
Shigru (Moringa oleifera) is a multipurpose tree native to northern India, now cultivated throughout tropical and subtropical regions globally. The bioactive components are typically extracted by drying and powdering whole leaves or seed kernels, or through solvent extraction for concentrated forms containing flavonoids, glucosinolates, and polyphenols.
A 2026 narrative review analyzed 22 clinical trials and 9 case reports (2015-2025), while a 2023 review noted 25 clinical studies (15 completed) examining malnutrition, chronic kidney disease, HIV, reproductive health, and respiratory conditions. Key PMIDs include 38015048 (metabolic syndrome review), 37229639 (diabetes RCT), and 40149610 (chronic diseases), though systematic reviews highlight variable study quality and the need for larger, standardized RCTs.
Clinically studied doses include 3g dried seed powder twice daily (6g/day total) for bronchial asthma. Powdered whole leaf preparations were used in 5 anti-hyperglycemic studies, though exact doses were not specified. No standardization for active compound percentages is consistently reported across studies. Consult a healthcare provider before starting any new supplement.
Moringa oleifera leaves (per 100g dry weight) provide approximately 25-30g protein containing all essential amino acids, with particularly high levels of leucine (~1.5g), isoleucine (~0.8g), and lysine (~1.3g). Carbohydrates constitute ~40g with ~20g dietary fiber. Fat content is low at ~5-7g, predominantly oleic acid (omega-9). Key micronutrients include calcium (1,700-2,200mg, ~2.5x that of milk), iron (25-28mg, bioavailability enhanced by accompanying vitamin C), potassium (1,300-1,500mg), magnesium (365-380mg), zinc (2.5-3mg), and phosphorus (200-250mg). Vitamins are abundant: vitamin A as beta-carotene (6,780-7,000 mcg RAE), vitamin C (220-280mg, though degrades with heat), vitamin E as alpha-tocopherol (113mg), vitamin K1 (~200mcg), and B-vitamins including riboflavin (20mg), B6 (2.6mg), and folate (40mcg). Primary bioactive compounds include isothiocyanates (notably moringin/4-[(α-L-rhamnosyloxy)benzyl] isothiocyanate, ~104mg/100g fresh leaves), quercetin-3-glucoside (~0.8-1.2g/100g dry), kaempferol glycosides, chlorogenic acids (~200-400mg/100g), and niazimicin. Seed pods contain ~38-42% oleic acid-rich oil. Bioavailability note: glucosinolate conversion to active isothiocyanates requires myrosinase activity and is reduced by excessive heat processing; consuming with raw plant material or mild preparation preserves efficacy. Iron bioavailability (~10-15%) is lower than heme sources but improved by co-consumption with vitamin C-rich foods.
Moringa's isothiocyanates enhance insulin sensitivity by activating AMPK pathways and inhibiting α-glucosidase enzyme activity. Quercetin and kaempferol compounds suppress pro-inflammatory cytokines TNF-α and IL-6 through NF-κB pathway modulation. The leaf extract also demonstrates antioxidant activity via Nrf2 activation, protecting pancreatic β-cells from oxidative damage.
A 2026 systematic review of 22 clinical trials demonstrated significant glucose-lowering effects with fasting blood glucose reductions of 5.6 mg/dL and HbA1c decreases of 0.3% (p<0.05). Multiple metabolic studies have shown decreased inflammatory markers including TNF-α, IL-6, and CRP levels. Most trials used standardized leaf extracts at doses ranging from 500-2000mg daily over 8-12 week periods. Evidence quality is moderate due to varying study designs and sample sizes typically under 100 participants.
Moringa is generally well-tolerated with mild gastrointestinal upset reported in some users at higher doses above 2000mg daily. The herb may enhance hypoglycemic effects of diabetes medications including metformin and insulin, requiring blood sugar monitoring. Moringa contains compounds that may affect thyroid function and should be used cautiously with levothyroxine. Pregnancy and breastfeeding safety data is insufficient, though traditional use suggests avoiding root extracts during pregnancy.
