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Benefits of Lion's Mane

Evidence:Moderate
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This content is for informational purposes only and does not constitute medical advice. Statements about dietary supplements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease. Individual results may vary — consult your healthcare provider before starting any supplement. Full disclaimer

Evidence-Based Benefits

  • Nerve growth factor stimulation — lion's mane contains hericenones and erinacines, unique compounds that cross the blood-brain barrier and stimulate NGF synthesis, promoting neuronal growth and repair
  • Cognitive function and memory — a 2009 double-blind RCT found 3g/day of lion's mane significantly improved cognitive function in older adults with mild cognitive impairment over 16 weeks
  • Neuroprotection — preclinical studies demonstrate lion's mane extracts protect against amyloid-beta plaque formation and oxidative damage to neurons, with implications for Alzheimer's prevention
  • Anxiety and depression reduction — a 2019 clinical trial found lion's mane supplementation improved depression, anxiety, and sleep quality scores after 8 weeks of daily use
  • Gut health support — beta-glucans and other polysaccharides act as prebiotics, supporting beneficial gut bacteria and intestinal barrier integrity

What the Research Says

Lion's mane has emerged as a promising natural supplement for cognitive health and neuroprotection. A seminal 2009 study by Mori et al. demonstrated that Hericium erinaceus supplementation significantly improved cognitive function in older adults with mild cognitive impairment over a 16-week period. This was supported by Lai et al. (2013), who identified lion's mane's neurotrophic properties, including its ability to stimulate nerve growth factor (NGF) synthesis in vitro.

Recent research has expanded on these findings. Saitsu et al. (2019) reported that oral intake of Hericium erinaceus improved cognitive function scores in healthy adults, suggesting broader applicability beyond impaired populations. Additionally, a 2023 pilot study by Docherty et al. found that lion's mane supplementation enhanced cognitive speed and reduced stress in young adults after acute and chronic use.

However, not all studies have shown consistent benefits. Surendran et al. (2025) conducted a double-blind RCT with 18 participants and found no significant cognitive or mood improvements from lion's mane extract, though there was some improvement in pegboard test performance. This highlights the need for further research to fully understand its effects across different populations.

Overall, while lion's mane shows promise as a cognitive enhancer and neuroprotective agent, more studies are needed to confirm these benefits and explore potential mechanisms of action.

Related Conditions

FocusBrain FogCognitive Function
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References

  1. RCTMori K, Inatomi S, Ouchi K, Azumi Y, Tuchida T (2009). Improving effects of the mushroom Yamabushitake (Hericium erinaceus) on mild cognitive impairment: a double-blind placebo-controlled clinical trial. Phytotherapy Research. DOI PubMed
  2. Lai PL, Naidu M, Sabaratnam V, et al. (2013). Neurotrophic properties of the Lion's mane medicinal mushroom, Hericium erinaceus. International Journal of Medicinal Mushrooms. DOI PubMed
  3. RCTSaitsu Y, Nishide A, Kikushima K, Shimizu K, Ohnuki K (2019). Improvement of cognitive functions by oral intake of Hericium erinaceus. Biomedical Research. DOI PubMed
  4. Surendran G, Saye J, Binti Mohd Jalil S, Spreadborough J, et al. (2025). Acute effects of a standardised extract of Hericium erinaceus (Lion's Mane mushroom) on cognition and mood in healthy younger adults: a double-blind randomised placebo-controlled study.. Frontiers in nutrition. DOI PubMed
  5. ReviewMenon A, Jalal A, Arshad Z, Nawaz FA, et al. (2025). Benefits, side effects, and uses of Hericium erinaceus as a supplement: a systematic review.. Frontiers in nutrition. DOI PubMed
  6. Shu MY, Zhang XC, Zuo L, Jiang FL, et al. (2025). Effects of fungal supplementation on endurance, immune function, and hematological profiles in adult athletes: a systematic review and meta-analysis.. Frontiers in nutrition. DOI PubMed
  7. RCTDocherty S, Doughty FL, Smith EF (2023). The Acute and Chronic Effects of Lion's Mane Mushroom Supplementation on Cognitive Function, Stress and Mood in Young Adults: A Double-Blind, Parallel Groups, Pilot Study.. Nutrients. DOI PubMed
Show 1 more reference
  1. La Monica MB, Raub B, Ziegenfuss EJ, Hartshorn S, et al. (2023). Acute Effects of Naturally Occurring Guayusa Tea and Nordic Lion's Mane Extracts on Cognitive Performance.. Nutrients. DOI PubMed