BY Samuel Mathis, MD, Hasan Yasin, MD, and Victor Sierpina, MD
Mushrooms have been used for centuries in traditional medicine, and increasing scientific evidence backs their role in integrative medicine. When used appropriately, certain mushrooms offer significant health benefits, including immune system response rates, cancer-fighting properties, general well-being, improved sleep, and even psychiatric applications. Understanding both the possibilities and the limits of mushroom supplements helps us make recommendations for 
patients to use them safely and based on solid evidence.
Turkey tail (Trametes versicolor) is one of the most extensively researched medicinal mushrooms in the literature (1). It contains polysaccharopeptides such as PSK and PSP, which activate natural killer cells and T-cells, boosting immune function. In Japan, PSK is used alongside chemotherapy for colorectal and gastric cancers, with evidence showing it may improve survival and quality of life when combined with standard treatments (1). Turkey tail also acts as a prebiotic. Its beta-glucans encourage beneficial gut bacteria, such as Bifidobacterium and Lactobacillus, helping to maintain a healthy microbiome and lower systemic inflammation. These results support growing research on the connection between gut health and the immune system, which could have far-reaching effects on managing and preventing chronic diseases. Other mushrooms show similar potential. Chaga is full of antioxidants, Reishi is popular for relaxation and sleep support, and Lion’s Mane has early evidence suggesting it may enhance cognition, memory, and gut health (2). Although these findings are preliminary, they indicate that mushrooms could support both physical and mental health.
In addition to nutritional and immune support, some mushrooms show promise in psychiatry. Psilocybin, the active compound in “magic mushrooms,” has been researched for treating resistant depression, PTSD, anxiety in cancer patients, and even substance use disorders (3). At Johns Hopkins, a single guided psilocybin session with psychotherapy showed lasting improvements in severe depression that did not respond to SSRIs and SNRIs. Other studies from the VA suggest it may benefit veterans with stubborn PTSD. Mechanistically, psilocybin seems to reduce amygdala overactivity, enhance mindfulness, and foster a sense of connection, all of which could help with psychiatric conditions. It is crucial to remember that psilocybin is illegal in most U.S. states, including Texas, and is only available in research settings or specific legal areas. When accessible, it should be provided within a structured psychedelic-assisted therapy framework to lessen risks like paranoia or depersonalization. In general, we do not recommend encouraging the use of psilocybin until further evidence regarding its safety and long-term effects has been researched.
While mushroom supplements are usually well-tolerated, physicians should consider three key factors when recommending mushrooms: Quality, Safety, and Dosing. Currently, mushroom supplements are not regulated by the FDA. Any mushroom supplement should be third-party tested and made from the mushroom fruiting body instead of grain-based mycelium, which often has fewer active compounds. One of the most common side effects of mushrooms is GI discomfort. Patients should be warned of this and stop or cut back if symptoms occur. Turkey tail may also affect liver metabolism of drugs and lower blood sugar, so caution is warranted for patients undergoing chemotherapy or using diabetes medications (1). Finally, most mushroom supplements come in powder, capsule, or tea form. Doses can vary widely, and specific instructions should be given when advising dosing. As always, eating mushrooms may have better effects than taking them in supplement form. However, if patients wish to use a supplement form the following are our recommendations for dosing:
Turkey Tail: 1–3 grams daily
Chaga: 500mg-1500mg daily in divided doses
Lion’s mane: 100-200 mg of mushroom. 1-3 grams depending on supplement formula
Reishi: 500mg – 2000mg daily in divided doses
When starting, patients should start with a low dose, watch for side effects, and reassess after 1–2 months to gauge effectiveness. Ensure patients understand that mushrooms are not standalone cures but rather support standard therapies. Patients should continue adhering to essential lifestyle practices— good nutrition, regular exercise, sleep, and medical treatment plans.
Medicinal mushrooms are returning as significant additions to modern healthcare. Turkey tail and Lion’s Mane show potential for immune, cognitive, and gut health, while psilocybin-based treatments are exploring new possibilities in psychiatry. Although more thorough studies are needed, current evidence supports careful, guided use of mushroom supplements. We can play an essential role in assisting patients in this expanding area of integrative medicine. With thoughtful guidance, mushrooms may become a beneficial tool for enhancing patient well-being.
References
- Dan A, Swain R, Belonce S, Jacobs RJ. Therapeutic Effects of Medicinal Mushrooms on Gastric, Breast, and Colorectal Cancer: A Scoping Review. Cureus. 2023;15(4):e37574. Published 2023 Apr 14. doi:10.7759/cureus.37574
- Valverde ME, Hernández-Pérez T, Paredes-López O. Edible mushrooms: improving human health and promoting quality life. Int J Microbiol. 2015;2015:376387. doi:10.1155/2015/376387
- Lowe H, Toyang N, Steele B, et al. Psychedelics: Alternative and Potential Therapeutic Options for Treating Mood and Anxiety Disorders. Molecules. 2022;27(8):2520. Published 2022 Apr 14. doi:10.3390/molecules27082520