Functional mushrooms
7 sources checked
"Functional mushrooms" is a marketing term for mushrooms sold as supplements, foods or drinks. Common examples are lion's mane, reishi, cordyceps and turkey tail. They are not psychedelic mushrooms. Psilocybin, the compound in magic mushrooms, is a Schedule I drug. In the US, mushroom supplements are sold as dietary supplements, which the FDA does not approve before sale. Evidence differs by species and product, so this hub does not treat them as one group. Reviews of reishi trials did not find enough evidence that it treats cancer or improves blood sugar or cholesterol. A turkey-tail extract (PSK) has been tested alongside chemotherapy for colorectal cancer, mostly in Japan. A review found low-certainty evidence of a small survival benefit; evidence on side effects was very low certainty.
Education only, not medical advice. Talk to a clinician about your own situation.
Most attention goes to individual mushrooms rather than the term. In September 2026, English Wikipedia's Hericium erinaceus article had 23,996 views and Cordyceps had 21,486, against 702 for Medicinal fungi. PubMed added 70 records on these mushrooms in the 30 days to Oct 11 2026.
Do any "functional mushroom" supplements improve a health outcome in well-designed trials?
If a large, well-run trial of a standardized mushroom product shows a clinical benefit, we would add a species-specific claim to that mushroom's page, not to the whole group.
For the pros: claims, studies and receipts7 sources · tap to open
3 reviewed claim records · 7 linked source receipts Inspect source receipts
Maturity: catalogued
No reviewed headline claim published yet. This page tracks identity; it does not establish effectiveness.
Attention describes reviewed public attention, evidence shows study types, and confidence applies only to the stated claim. There is no overall score.
Claims
Mapped studies / experiment families
One experiment counts once, even with several registrations or publications. Counts above describe the headline claim.
No reviewed experiment families mapped yet.
Studies & active trials
Only papers and registered trials an editor reviewed for this page. Being listed is not a finding; the claims above say what they show.
What still isn't settled?
Do any "functional mushroom" supplements improve a health outcome in well-designed trials?
Existing reviews found low-quality or inconclusive trials for reishi and turkey tail. Lion's mane trials are small.
What would answer it: Registered randomized trials with standardized, chemically characterized products and clinical endpoints, e.g. Cordyceps sinensis for recurrence prevention in MAC lung disease (NCT07174076; 300 participants; est. 2028-07).
Not shown: Cochrane reviews (2016 and 2015) found too little good evidence to support reishi as a cancer treatment, and no clear effect on blood sugar or cholesterol in the few small trials available, all in people with type 2 diabetes. For most other species and uses, there are too few good trials to say. Some products sold as 'mushroom' gummies or chocolates are not functional mushrooms: in 2024 the FDA said that Amanita muscaria and its compounds, used in some so-called psychedelic edibles, are not authorized in conventional food.
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