Human Studies vs Animal and Laboratory Research on Mushrooms
Why a mushroom result in cells or mice is not a result in people, with examples from lion's mane, maitake and reishi, and what to ask when a claim leans on animal studies.
Content last updated . This page has not been medically reviewed.
Safety first. Supplements can cause side effects and interact with medicines. Read mushroom safety and interactions before you use any mushroom product.
Short answer. Animal and laboratory studies on mushrooms can raise questions, but they cannot answer them for people. A result in cells or mice is preclinical (cells or animals) evidence. It does not show that a supplement works, or is safe, in humans.
Safety first. Harm can show up in people even when animal research sounds reassuring. For example, case reports describe kidney damage from oxalate in people who took chaga mushroom powder over months or years. [1] Ask a pharmacist or clinician before using any mushroom product, particularly with kidney or liver disease or cancer care, and see mushroom safety.
How the types of research differ
The US National Center for Complementary and Integrative Health (NCCIH) describes basic research as the first step, translational research as building on it to test new ways to prevent or treat conditions, and clinical trials as giving the clearest information on whether something is effective and safe in humans. [2] One review of animal-to-human translation lists lack of generalizability, failure in translating animal data to humans and poor experimental design among common problems. [3]How much of each is indexed
In our PubMed searches on 2026-10-23, records tagged as animal-only and as human were both common, while randomized trials were few. [4]| Mushroom names searched | Tagged humans | Tagged animals only | Tagged randomized trials |
|---|---|---|---|
| Lion's mane (Hericium erinaceus) | 220 | 196 | 5 |
| Reishi (Ganoderma lucidum) | 1,136 | 927 | 28 |
| Cordyceps | 640 | 959 | 32 |
| Maitake (Grifola frondosa) | 182 | 200 | 5 |
| Chaga (Inonotus obliquus) | 143 | 115 | 0 |
A "human" tag does not by itself mean people ate the mushroom, and we did not screen each record. Full counts are on research by mushroom.
Examples where the two diverge
| Mushroom | Animal or lab finding (preclinical) | Human finding | What can be said |
|---|---|---|---|
| Lion's mane | A systematic review of cell and rodent studies reported dose-dependent benefits in motor, cognitive and depression-like behaviors with mycelial formulations and erinacines [5] | A 12-week trial used supplements containing fruiting body, a different material [6] | Animal results on one material do not transfer to another; human data are small trials only |
| Maitake | A meta-analysis of 24 animal studies found reduced tumor growth, though study quality was not high [7] | A review found a lack of systematic study in humans [8]; a 34-person breast cancer trial found both stimulating and suppressing immune effects, varying by amount [9] | More is not simply better, and the animal result did not become a treatment |
| Reishi and cancer | Cochrane notes lab research suggested promising anticancer and immune properties [10] | The same review found insufficient evidence to justify use as first-line treatment [10] | Insufficient evidence in people |
Lab measures in people are not outcomes either
A human study can still measure only a blood or cell marker. In a Cordyceps militaris drink trial, natural killer cell activity rose in women, but that is a marker, not fewer infections. [11] In a shiitake food trial, salivary IgA and cell responses changed in healthy adults. [12] Markers are leads for larger trials.Questions to ask about any claim
- Which species, part and form were used, and is it the same as the product in front of you?
- Was it cells, animals or people? What amount and route did the animals receive?
- If it was people, how many, for how long, and was there a placebo?
- Was the outcome a marker or something a person would notice?
Related pages: how to evaluate a mushroom health claim, evidence types and study designs and, for herbal adaptogens, human studies vs animal research on adaptogens.
Frequently asked questions
Do mouse studies prove a mushroom works?
No. Reviews describe failures of animal results to translate to humans. [3]
Are test-tube studies useless?
No. They are basic research, a first step that raises questions for later testing. [2]
Why does lion's mane appear helpful in animals but less clear in people?
The animal review and the human trial used different materials, and human trials are small. [5][6]
Can a mushroom be harmful even if animal studies look good?
Yes. Case reports describe oxalate kidney injury with chaga in people. [1]
What kind of study should I look for?
Ask for randomized, placebo-controlled human trials of the exact product, and for reviews. [2]
References
- Chaga case reports of oxalate kidney injury: Chaga mushroom-induced oxalate nephropathy. Clin Nephrol. 2014. PubMed 23149251; Development of End Stage Renal Disease after Long-Term Ingestion of Chaga Mushroom. J Korean Med Sci. 2020. PubMed 32419395; Chaga mushroom-induced oxalate nephropathy that clinically manifested as nephrotic syndrome. Medicine. 2022. PubMed 35451393. Read 2026-10-23.
- National Center for Complementary and Integrative Health. Know the Science: Types of Research. Read 2026-10-23.
- Importance of Systematic Reviews and Meta-analyses of Animal Studies: Challenges for Animal-to-Human Translation. J Am Assoc Lab Anim Sci. 2020. PubMed 32727637. Read 2026-10-23.
- National Library of Medicine. PubMed, searched through NCBI E-utilities (esearch) on 2026-10-23. Each mushroom was searched by scientific and common names in the title or abstract, filtered by publication type (randomized controlled trial; systematic review or meta-analysis) or by the Humans and Animals MeSH tags, for records up to 2026-10-23. The goal snapshot combined a fixed list of medicinal mushroom names with goal words. Counts change as records are added. Read 2026-10-23.
- Unveiling the role of erinacines in the neuroprotective effects of Hericium erinaceus: a systematic review in preclinical models. Front Pharmacol. 2025. PubMed 40626304. Read 2026-10-23.
- Improvement of cognitive functions by oral intake of Hericium erinaceus. Biomed Res. 2019. PubMed 31413233. Read 2026-10-23.
- Antitumor activities of Grifola frondosa (Maitake) polysaccharide: A meta-analysis based on preclinical evidence and quality assessment. J Ethnopharmacol. 2021. PubMed 34271115. Read 2026-10-23.
- Maitake mushroom (Grifola frondosa): systematic review by the natural standard research collaboration. J Soc Integr Oncol. 2009. PubMed 19476741. Read 2026-10-23.
- A phase I/II trial of a polysaccharide extract from Grifola frondosa (Maitake mushroom) in breast cancer patients: immunological effects. J Cancer Res Clin Oncol. 2009. PubMed 19253021. Read 2026-10-23.
- Ganoderma lucidum (Reishi mushroom) for cancer treatment. Cochrane Database Syst Rev. 2016. PubMed 27045603. Read 2026-10-23.
- A randomized controlled clinical trial examining the effects of Cordyceps militaris beverage on the immune response in healthy adults. Sci Rep. 2024. PubMed 38580687 (full text via Europe PMC PMC10997757). Read 2026-10-23.
- Consuming Lentinula edodes (Shiitake) Mushrooms Daily Improves Human Immunity: A Randomized Dietary Intervention in Healthy Young Adults. J Am Coll Nutr. 2015. PubMed 25866155. Read 2026-10-23.