In recent years, medicinal mushrooms have drawn attention not only from traditional herbalists but also from scientists exploring their therapeutic potential. Among them, Ganoderma lucidum, commonly known as reishi, has been used in Eastern medicine for over two millennia. Once reserved for emperors due to its perceived life-extending properties, reishi is now widely available in capsules, teas, tinctures, and powders. While reishi has long been associated with immune support and general vitality, emerging research highlights its potential in protecting the brain from aging and disease.
Modern studies reveal that the bioactive compounds in reishi mushrooms may help combat cognitive decline, reduce inflammation in the nervous system, and support overall brain health. As neurodegenerative diseases such as Alzheimer’s and Parkinson’s become more prevalent, interest in natural strategies to support cognitive function is growing. Reishi mushrooms, with their unique chemical profile, may offer a valuable tool in that effort.
The Science Behind Reishi's Neuroprotective Effects
A comprehensive overview by Abd El-Aziz, Wadan, and Fereidouni explains how reishi mushrooms contribute to brain health through antioxidant and anti-inflammatory properties. In a study on a mouse model of Alzheimer’s disease, reishi supplementation led to a reduction in neuroinflammation and improvement in cognitive function (Abd El-Aziz et al. 2025). These effects are believed to be the result of reishi's influence on several biological pathways, including cholinergic signaling, which is essential for memory and learning.
One of the key aspects of reishi’s neuroprotective activity is its ability to fight oxidative stress. Oxidative stress occurs when the body produces more free radicals than it can neutralize, leading to cell damage. In the brain, this can accelerate aging and contribute to the development of neurodegenerative diseases. Reishi mushrooms contain triterpenes and polysaccharides, two powerful classes of compounds that have demonstrated strong antioxidant effects. As Paul explains in his 2025 preprint, these compounds not only protect neurons from damage but also support mitochondrial health, which is vital for energy production in brain cells.
Gut-Brain Axis and Mood Support
New research has also begun to explore how reishi may benefit the brain by interacting with the gut. The gut-brain axis is a communication network between the gastrointestinal system and the central nervous system. Disturbances in this system have been linked to mood disorders, cognitive issues, and neuroinflammation.
A study by Koszła and colleagues investigated how reishi and another medicinal mushroom, Hericium erinaceus (Lion’s Mane), influence gut-brain signaling in human organoid models. They found that reishi modulated CREB and BDNF signaling—two markers associated with neuroplasticity and emotional regulation (Koszła et al. 2025). Additionally, reishi appeared to promote the expression of heat shock proteins, which play a role in cellular stress responses and protein repair. These changes corresponded with mood-related improvements in the lab model, suggesting that reishi could be a candidate for natural mood stabilization and cognitive support through gut modulation.
Pediatric Use and Real-World Outcomes
While most scientific studies focus on adult brains, emerging research has begun to examine the effects of reishi in pediatric populations as well. Lowe and colleagues published a mixed methods study involving families who used functional mushrooms, including reishi and Hericium erinaceus (Lion’s Mane), to support children with neurological challenges. One compelling case involved a young girl with frequent seizures who experienced a significant improvement in both seizure frequency and cognitive function after being introduced to reishi supplements (Lowe et al. 2025).
This study, grounded in both real-world user reports and biological data, found that many parents noticed positive shifts in mood, attention, and overall brain function in their children. The research suggested that reishi’s anti-inflammatory and neuroprotective properties may extend across age groups, potentially offering a gentle, natural support option for developing brains.
Alzheimer’s, Parkinson’s, and Broader Neurodegeneration
Beyond general cognitive support, reishi has shown promise in disease-specific models, especially those relating to Alzheimer’s and Parkinson’s disease. Khanal et al. compiled a comprehensive review of reishi’s therapeutic potential and concluded that its antioxidant and neuroprotective effects are especially pronounced in these contexts (Khanal et al. 2025). In both Alzheimer’s and Parkinson’s models, reishi helped maintain neuronal structure, reduced oxidative damage, and supported the body’s natural ability to repair cellular damage.
These effects are largely due to reishi’s ability to regulate oxidative stress and inflammatory processes—two of the most significant drivers of neurodegenerative disease. When oxidative damage accumulates, it can impair mitochondrial function, which is crucial for neurons due to their high energy demands. Reishi’s compounds not only combat this damage but also enhance the resilience of neural tissue.
Another promising area of research lies in reishi’s role in promoting neurogenesis and brain repair. Tasnim and Hamzeh emphasized the mushroom’s contribution to stimulating brain-derived neurotrophic factor (BDNF), a key protein involved in neuron growth and regeneration (Tasnim and Hamzeh 2025). In this study, reishi was found to act synergistically with Hericium erinaceus (Lion’s Mane), enhancing the brain’s ability to generate new neural connections and recover from inflammatory damage.
Conclusion: A Holistic Ally for Brain Health
Although reishi has long been revered in traditional medicine, modern research is now confirming what ancient practitioners suspected: this mushroom holds real potential in supporting the brain across various stages of life. From children with neurological disorders to aging adults concerned with memory loss, reishi’s broad range of benefits makes it an increasingly attractive supplement for brain health.
Its antioxidant, anti-inflammatory, and mitochondrial-supporting compounds contribute to slowing cognitive decline, protecting against diseases such as Alzheimer’s and Parkinson’s, and promoting emotional well-being through gut-brain signaling. While more human clinical trials are needed to fully establish dosage guidelines and long-term safety, the current body of research paints a promising picture of reishi as a powerful natural ally in maintaining cognitive function.
With its growing availability in tinctures, capsules, juices, and powders, reishi is more accessible than ever. Those looking to support their brain health with a gentle, plant-based approach may find that this ancient fungus offers a modern solution.
Works Cited
Abd El-Aziz, M.K., Wadan, A.H.S., and Fereidouni, A. “An Overview of the Nutritional and Potential Health Benefits of Medicinal Mushrooms.” Medicinal Mushrooms for Brain Health, edited by Springer, 2025.
Khanal, S., Thakur, P., Sharma, A., Kumar, A., and Pillai, M. “Unlocking the Therapeutic Potential of Ganoderma lucidum.” 3 Biotech, Springer, 2025.
Koszła, O., Kukula-Koch, W., Jóźwiak, K., and Jastrząb, R. “Biotransformation of Ganoderma lucidum and Hericium erinaceus for Gut-Brain Modulation.” Journal of Ethnopharmacology, Elsevier, 2025.
Lowe, M.X., Darby, Q.A., Seguin, H.R., and Boylan, T. “Functional Mushrooms Saved My Daughter’s Life: A Mixed Methods Study of Reishi and Lion’s Mane.” Pharmacological Research, Elsevier, 2025.
Paul, N. “Significant Role of Bioactive Compounds of Ganoderma lucidum in the Aging Process.” ResearchGate (Preprint), 2025.
Tasnim, D., and Hamzeh, L. “Ganoderma lucidum and Hericium erinaceus in Brain Health.” Medicinal Mushrooms Volume, Springer, 2025.
