Authoritative summary Evidence context Summary of multiple laboratory and human studies
NCI medicinal mushroom evidence summary
NCI reviews human and laboratory research on several medicinal mushrooms. The clearest human evidence discussed is for PSK, a specific Turkey Tail-derived product used with standard cancer treatment in Japan. This is not evidence that ordinary retail mushroom supplements treat cancer.
- What was studied
- Multiple mushroom products, including the specific Turkey Tail extract PSK and various Reishi preparations
- Setting
- Mixed treatment settings
- Why it ranks here
- This is an authoritative evidence map, not a single clinical experiment or a treatment endorsement.
Limits and cautions
- The summary covers different mushroom species and preparations that are not interchangeable.
- Many findings concern immune markers or laboratory models rather than survival or quality of life.
- A summary cannot replace review of the individual trial methods and risk of bias.
The FDA has not approved medicinal mushrooms as a treatment for cancer or another medical condition in the United States.