TL;DR

Maitake mushrooms (Grifola frondosa), also called hen of the woods, are edible fungi with both nutritional and medicinal properties. Rich in polysaccharides and proteins, they support immunity, help regulate blood sugar and blood pressure, show promise in cancer research, and promote a healthier gut microbiome.

What Are Maitake Mushrooms?

Maitake mushrooms (Grifola frondosa) are edible fungi native to Asia, known in Japan as “hen of the woods.” The Japanese word mai means dance, and take means mushroom. Traditionally valued as both food and medicine, maitake has become a focus of modern research due to its unique bioactive compounds.

Bioactive Compounds

Polysaccharides (β-glucans):
Maitake polysaccharides demonstrate a wide range of biological activities, including immune modulation, antitumor, antiviral, antidiabetic, and anti-inflammatory effects. Recent studies also show that these polysaccharides may influence the gut microbiota in beneficial ways.

Proteins and Glycoproteins:
Protein components, including glycoproteins, have been found to exert anti-tumor, immune-enhancing, anti-diabetic, anti-hypertensive, lipid-lowering, and antiviral effects.

Other Constituents:
Additional phytochemicals in G. frondosa contribute antioxidant, anti-inflammatory, hypoglycemic, and antitumor actions.

Health-Supportive Properties

  • Immune Function: Maitake stimulates natural killer cells and macrophages, enhancing the body’s defense system.
  • Cancer Research: Laboratory studies suggest tumor-suppressing activity, possibly linked to improved immune signaling and inhibition of angiogenesis.
  • Metabolic Support: Extracts have been associated with better blood sugar regulation, lipid balance, and blood pressure control.
  • Inflammation & Oxidative Stress: Maitake’s compounds reduce inflammatory markers and oxidative damage, both of which play a role in chronic disease.
  • Gut Microbiome: β-glucans appear to act as prebiotics, feeding beneficial bacteria that support digestion and immunity.

Conclusion

Maitake mushroom offers more than culinary value. Rich in bioactive polysaccharides, proteins, and antioxidants, it has been studied for effects on immunity, tumor suppression, and metabolic balance. While human research is still evolving, maitake remains a promising example of how traditional foods can support modern health.

FAQs About Maitake Mushroom

Q: What is maitake mushroom used for?
A: Maitake is traditionally used for supporting immune function and general vitality. Modern research also suggests potential benefits for blood sugar, cholesterol, blood pressure, and cancer support.

Q: Does maitake help with immunity?
A: Yes. Maitake’s β-glucans stimulate immune cells such as macrophages and natural killer cells, helping the body respond more effectively to pathogens.

Q: Is maitake good for cancer?
A: Preclinical and some clinical studies suggest maitake extracts may support the immune system and inhibit tumor growth, though more human research is needed. It should not be considered a replacement for medical treatment.

Q: Can maitake mushrooms lower blood sugar?
A: Some studies show that maitake extracts may improve insulin sensitivity and support healthy blood sugar control. This makes them of interest in diabetes research.

Q: How is maitake different from reishi or shiitake mushrooms?
A: While all are medicinal mushrooms, maitake is best studied for immune modulation, metabolic health, and antitumor activity, whereas reishi is often linked to stress response and longevity, and shiitake is recognized for cardiovascular and immune support.

Q: Is maitake safe to eat every day?
A: Maitake is considered safe as a food. As a supplement, it is generally well tolerated, but those taking blood pressure medication, blood sugar–lowering drugs, or anticoagulants should consult a healthcare provider.

Maitake Mushroom Research

  1. Consuming Lentinula edodes (Shiitake) Mushrooms Daily Improves Human Immunity: A Randomized Dietary Intervention in Healthy Young Adults. Journal of the American College of Nutrition, 2015; 1
  2. Enhancement of cytokine production by macrophages stimulated with (1→3)-β-D-glucan, grifolan (GRN), isolated from Grifola frondosa. Biol. Pharm. Bull. 1994;17:1554–1560. doi: 10.1248/bpb.17.1554.
  3. Macrophage J774. 1 cell is activated by MZ-Fraction (Klasma-MZ) polysaccharide in Grifola frondosa. Mycoscience. 2006;47:360–366. doi: 10.1007/S10267-006-0315-7.
  4. Structural characterization and antiviral activity of a novel heteropolysaccharide isolated from Grifola frondosa against enterovirus 71. Carbohydr. Polym. 2016;144:382–389.
  5. Anti-diabetic effect of an α-glucan from fruit body of maitake (Grifola frondosa) on KK-Ay mice. J. Pharm. Pharmacol. 2007;59:575–582.
  6. Ng L.-T. A (1→6)-Branched (1→4)-β-d-Glucan from Grifola frondosa Inhibits Lipopolysaccharide-Induced Cytokine Production in RAW264. 7 Macrophages by Binding to TLR2 Rather than Dectin-1 or CR3 Receptors. J. Nat. Prod. 2020;83:231–242.
  7. Natural polysaccharides exhibit anti-tumor activity by targeting gut microbiota. Int. J. Biol. Macromol. 2019;121:743–751. doi: 10.1016/j.ijbiomac.2018.10.083.
  8. The positive effects of Grifola frondosa heteropolysaccharide on NAFLD and regulation of the gut microbiota. Int. J. Mol. Sci. 2019;20:5302. doi: 10.3390/ijms20215302.
  9. Hypoglycemic activity and gut microbiota regulation of a novel polysaccharide from Grifola frondosa in type 2 diabetic mice. Food Chem. Toxicol. 2019;126:295–302.
  10. Purification and partial characterization of a novel anti-tumor glycoprotein from cultured mycelia of Grifola frondosa. Int. J. Biol. Macromol. 2013;62:684–690.
  11. Characterization of a novel maitake (Grifola frondosa) protein that activates natural killer and dendritic cells and enhances antitumor immunity in mice. J. Agric. Food Chem. 2013;61:9828–9838.
  12. Glycoprotein with Antidiabetic, Antihypertensive, Antiobesity and Antihyperlipidemic Effects from Grifola frondosa, and a Method for Preparing Same. 7,214,778. U.S. Patent. 2007 May 8;
  13. Isolation, identification and function of a novel anti-HSV-1 protein from Grifola frondosa. Antivir. Res. 2007;75:250–257.
  14. Pharmacological and pharmacokinetic studies with agaricoglycerides, extracted from Grifola frondosa, in animal models of pain and inflammation. Inflammation. 2012;35:1269–1275.
  15. Pyrrole alkaloids and ergosterols from Grifola frondosa exert anti-α-glucosidase and anti-proliferative activities. J. Funct. Foods. 2018;43:196–205.
  16. ο-Orsellinaldehyde from the submerged culture of the edible mushroom Grifola frondosa exhibits selective cytotoxic effect against Hep 3B cells through apoptosis. J. Agric. Food Chem. 2006;54:7564–7569.
  17. Antioxidant properties and antioxidant compounds of various extracts from the edible basidiomycete Grifola frondosa (Maitake) Molecules. 2011;16:3197–3211.
  18. Antitumor activity of fruiting bodies of cultured Grifola frondosa. Jpn. J. Med Mycol. 1982;23:261–263.
  19. Nanba H., Kubo K. Antitumor Substance Extracted from Grifola. 5,854,404. U.S. Patent. 1998 Dec 29
  20. Synergistic apoptotic effect of d-fraction from Grifola frondosa and vitamin C on hepatocellular carcinoma SMMC-7721 cells. Integr. Cancer Ther. 2017;16:205–214.
  21. A polysaccharide from Grifola frondosa fruit body induces HT-29 cells apoptosis by PI3K/AKT-MAPKs and NF-κB-pathway. Int. J. Biol. Macromol. 2020;147:79–88.
  22. Genes related to suppression of malignant phenotype induced by Maitake D-Fraction in breast cancer cells. J. Med. Food. 2013;16:602–617.
  23. Pyrrole alkaloids and ergosterols from Grifola frondosa exert anti-α-glucosidase and anti-proliferative activities. J. Funct. Foods. 2018;43:196–205.
  24. Purification and partial characterization of a novel anti-tumor glycoprotein from cultured mycelia of Grifola frondosa. Int. J. Biol. Macromol. 2013;62:684–690.
  25. Isolation and characterization of a lectin from Grifola frondosa fruiting bodies. BBA Gen. Subj. 1990;1034:247–252.
  26. Administration of a polysaccharide from Grifola frondosa stimulates immune function of normal mice. J. Med. Food. 2004;7:141–145.
  27. Maitake extracts and their therapeutic potential—A review. Altern. Med. Rev. 2001;6:48–60.
  28. Effects of Maitake (Grifola frondosa) glucan in HIV-infected patients. Mycoscience. 2000;41:293–295.
  29. Structural characterization and antiviral activity of a novel heteropolysaccharide isolated from Grifola frondosa against enterovirus 71. Carbohydr. Polym. 2016;144:382–389.
  30. Isolation, identification and function of a novel anti-HSV-1 protein from Grifola frondosa. Antivir. Res. 2007;75:250–257.
  31. Addition of Maitake D-fraction reduces the effective dosage of Vancomycin for the treatment of Listeria-infected mice. Jpn. J. Pharmacol. 2001;87:327–332.
  32. Inhibition of hepatitis B virus by D-fraction from Grifola frondosa: Synergistic effect of combination with interferon-α in HepG2 2.2.15. Antivir. Res. 2006;72:162–165.
  33. Hypoglycemic effects of Grifola frondosa (Maitake) polysaccharides F2 and F3 through improvement of insulin resistance in diabetic rats. Food Funct. 2015;6:3567–3575.
  34. Possible hypoglycemic action of SX-fraction targeting insulin signal transduction pathway. Int. J. Gen. Med. 2013;6:181–187.
  35. Anti-diabetic effect of an α-glucan from fruit body of maitake (Grifola frondosa) on KK-Ay mice. J. Pharm. Pharmacol. 2007;59:575–582.
  36. Cholesterol-lowering effects of maitake (Grifola frondosa) fiber, shiitake (Lentinus edodes) fiber, and enokitake (Flammulina velutipes) fiber in rats. Exp. Biol. Med. 2001;226:758–765.
  37. Effect of Shiitake (Lentinus edodes) and Maitake (Grjfola frondosa) mushrooms on blood pressure and plasma lipids of spontaneously hypertensive rats. J. Nutr. Sci. Vitaminol. 1987;33:341–346.
  38. Dietary mushrooms reduce blood pressure in spontaneously hypertensive rats (SHR) J. Nutr. Sci. Vitaminol. 1989;35:91–94.
  39. Maitake mushroom extracts ameliorate progressive hypertension and other chronic metabolic perturbations in aging female rats. Int. J. Med Sci. 2010;7:169.
  40. Preparation, separation and antioxidant properties of hydrolysates derived from Grifola frondosa protein. Czech J. Food Sci. 2015;33:500–506.
  41. Cyclooxygenase inhibitory and antioxidant compounds from the mycelia of the edible mushroom Grifola frondosa. J. Agric. Food Chem. 2002;50:7581–7585.
  42. Antioxidant properties and antioxidant compounds of various extracts from the edible basidiomycete Grifola frondosa (Maitake) Molecules. 2011;16:3197–3211.
  43. Antidiabetic effect of probiotic dahi containing Lactobacillus acidophilus and Lactobacillus casei in high fructose fed rats. Nutrition. 2007;23:62–68.
  44. Hypoglycemic and hypolipidemic activities of Grifola frondosa polysaccharides and their relationships with the modulation of intestinal microflora in diabetic mice induced by high-fat diet and streptozotocin. Int. J. Biol. Macromol. 2020;153:1231–1240.

Disclaimer: This information is for educational purposes only and is not medical advice.

<script type="application/ld+json">
{
  "@context": "https://schema.org",
  "@type": "FAQPage",
  "mainEntity": [
    {
      "@type": "Question",
      "name": "What is maitake mushroom used for?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Maitake is traditionally used for supporting immune function and general vitality. Modern research also suggests potential benefits for blood sugar, cholesterol, blood pressure, and as an adjunct in cancer research. It is not a replacement for medical treatment."
      }
    },
    {
      "@type": "Question",
      "name": "Does maitake help with immunity?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Yes. Maitake’s beta-glucans modulate immune cells such as macrophages and natural killer cells, helping the body respond more effectively to pathogens. Human data are still developing."
      }
    },
    {
      "@type": "Question",
      "name": "Is maitake good for cancer?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Preclinical and some clinical studies suggest maitake extracts may support the immune system and inhibit tumor growth. More human research is needed, and it should not be considered a substitute for standard care."
      }
    },
    {
      "@type": "Question",
      "name": "Can maitake mushrooms lower blood sugar?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Some studies show that maitake extracts may improve insulin sensitivity and support healthy blood sugar control, making them of interest in diabetes research."
      }
    },
    {
      "@type": "Question",
      "name": "How is maitake different from reishi or shiitake mushrooms?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Maitake is best studied for immune modulation, metabolic health, and antitumor activity. Reishi is often associated with stress response and longevity, and shiitake is recognized for cardiovascular and immune support."
      }
    },
    {
      "@type": "Question",
      "name": "Is maitake safe to eat every day?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "As a food, maitake is generally safe. As a supplement, it is usually well tolerated, though mild digestive upset can occur. People taking blood sugar–lowering drugs, blood pressure medication, or anticoagulants should consult a healthcare provider."
      }
    }
  ]
}
</script>