Maitake (Grifola frondosa)
The 'dancing mushroom.' Polysaccharide-rich, with the best evidence for immune support, blood sugar control, and cancer-adjunct use of any culinary mushroom.
Moderate for immune support, blood sugar / insulin sensitivity (Konno et al.), cholesterol lowering, and as cancer-therapy adjunct in Japanese clinical practice. Effects: 4–12 weeks.
Maitake is a frilled, edible bracket fungus traditional in Japanese cuisine and TCM. Its bioactive beta-glucan complex (the 'D-fraction') is one of the best-studied mushroom polysaccharides — used as an adjunct in Japanese cancer therapy and showing immune modulation, blood sugar normalisation, and lipid improvements in human trials. Sliced fresh maitake is delicious (meaty, savoury); extracts deliver therapeutic doses.
- Form
- Maitake D-fraction (proprietary fruiting-body extract — most-studied form). Standardised maitake extract to ≥30% beta-glucans.
- Dose
- 500–2,000 mg/day of standardised extract.
- Timing
- With food. Anytime.
- Schedule
- Daily.
- Side effects
- Generally well-tolerated. Mild GI upset, blood-thinning at high doses.
- Interactions
- Anticoagulants — mild additive. Diabetes medications — additive glucose lowering. Immunosuppressants — opposing.
- Contraindications
- Mushroom allergy. Active autoimmune disease (immune-stimulating). Bleeding disorders. Pregnancy / breastfeeding (limited data).
- Lab markers
- Fasting glucose, HbA1c, lipid panel if used metabolically.
- Food sources
- Fresh maitake — increasingly available in farmers' markets and Asian groceries. Excellent in stir-fries and as a meat substitute.
Pairs with
Reishi, turkey tail, cordyceps (mushroom blend). Vitamin D3, vitamin C (immune stack). Berberine (additive metabolic).
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