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Study Design Researchers administered Reishi extract to mice and examined changes in gut microbiota composition, serotonin levels, and sleep quality. They specifically tracked the gut-brain axis pathway to understand how the mushroom affects sleep. Key Findings Reishi improved sleep through a pathway that depends on gut microbiota. The mushroom altered gut bacteria composition, which in…

Study Design This gold-standard study design gave healthy adult volunteers either Reishi-derived beta-glucans or a placebo, with neither participants nor researchers knowing who received which (double-blind). Researchers then measured immune cell activity through blood tests. Key Findings The group taking Reishi beta-glucans showed measurable changes in immune cell activity compared to the placebo group. Importantly,…

A 2017 study published in Frontiers in Immunology investigated how polysaccharides (complex carbohydrates) from Lion’s Mane (Hericium erinaceus) affect the immune system, specifically focusing on immune cells in the intestines. Study Design Researchers extracted polysaccharides from Lion’s Mane and studied their effects on intestinal immune cells. They examined how these compounds interact with the gut…

A 2021 study published in the International Journal of Molecular Sciences examined how Lion’s Mane (Hericium erinaceus) affects the connection between gut health, brain inflammation, aging, and cognitive function in elderly mice. **Study Design** Researchers administered Lion’s Mane extract to elderly mice and measured cognitive performance, inflammation markers in both the gut and brain, and…

A comprehensive 2015 review published in the Journal of Agricultural and Food Chemistry examined the full chemical composition of Lion’s Mane (Hericium erinaceus), comparing the bioactive compounds found in fruiting bodies versus mycelium. Study Design Researchers analyzed and cataloged the various health-promoting compounds in both the fruiting body (the visible mushroom) and the mycelium (the…

A 2019 study published in Evidence-Based Complementary and Alternative Medicine examined the effects of Lion’s Mane (Hericium erinaceus) supplementation on mood and sleep disorders in overweight or obese patients, while also measuring brain-derived neurotrophic factor (BDNF) levels. Study Design Researchers gave overweight or obese participants Lion’s Mane supplements and measured changes in mood, sleep quality,…

A foundational 1994 study published in Tetrahedron Letters isolated specific compounds called erinacines from Lion’s Mane (Hericium erinaceus) mycelium and tested their ability to stimulate nerve growth factor (NGF) production in cell cultures. Study Design Researchers extracted and isolated erinacines A, B, and C from Lion’s Mane mycelium. They then tested these purified compounds on…

A 2017 study published in Oncotarget investigated how Lion’s Mane (Hericium erinaceus) extracts affect inflammatory bowel disease (IBD), specifically examining immune system regulation and changes to gut bacteria composition. Study Design Researchers administered Lion’s Mane extracts to subjects with IBD and measured inflammation markers, immune cell activity, and changes in the gut microbiome over the…

A 2009 study published in Phytotherapy Research conducted a clinical trial with older adults (50-80 years old) experiencing mild cognitive impairment to test the effects of Lion’s Mane supplementation. Study Design Japanese researchers administered Lion’s Mane tablets to participants for 16 weeks, then stopped supplementation for a 4-week washout period. Cognitive function was measured throughout…

A 2020 review published in the International Journal of Molecular Sciences compiled and analyzed existing research on Lion’s Mane (Hericium erinaceus) and depression, examining both animal studies and human trials. Study Approach This review paper synthesized findings from multiple studies to understand the potential mechanisms by which Lion’s Mane may affect depressive disorders. Review papers…