Lion's Mane Clinical Studies: Dosage, Cognitive Benefits & Research Results

Table of Contents

• Introduction
• What is Lion's Mane?
• Does Lion's Mane Improve Cognitive Function?
• Does Lion's Mane Support Mood Balance and a Sense of Calm?
• Does Lion's Mane Stimulate NGF Production?
• Does Lion's Mane Affect Sleep Quality?
• What is the Optimal Dosage of Lion's Mane in Studies?
• Are There Any Side Effects of Lion's Mane?
• Key Takeaways
• FAQ

What is Lion's Mane?

Lion's mane is a traditional mushroom with potential for cognitive wellness and mood support. Lion's mane (Hericium erinaceus) is a unique-looking mushroom that resembles a lion's mane as it grows. It has a long history of use in traditional practices, particularly in East Asia, and is now gaining popularity worldwide for its potential wellness-promoting properties.

Hericium erinaceus is known for containing bioactive compounds, including hericenones and erinacines, believed to be responsible for many of its effects. These compounds may support the synthesis of NGF (Nerve Growth Factor), which is a protein that supports the growth and maintenance of nerve cells. For premium Japanese mushroom supplements and fermented food products, Kinkatsudo offers high-quality, dual-extracted supplements.

Does Lion's Mane Improve Cognitive Function?

Several studies suggest that lion's mane may improve cognitive function, especially in individuals experiencing age-related cognitive changes or the elderly. These studies have observed improvements in memory and cognitive test scores after consistent supplementation with lion's mane. It is important to note that these are potential benefits and individual results may vary.

Mori et al. (2009) published a double-blind, placebo-controlled trial in *Phytotherapy Research*, which found that elderly individuals (50-80 years old) experiencing age-related cognitive changes showed statistically significant cognitive improvements after 16 weeks of lion's mane supplementation compared to the placebo group. The study involved 30 participants, with 15 in the lion's mane group and 15 in the placebo group. Participants were carefully screened to ensure they met the criteria for age-related cognitive changes but were otherwise generally healthy. The intervention group received 3 grams per day of lion's mane extract in capsule form, divided into three doses of 1 gram each. The placebo group received capsules containing a starch-based placebo. Cognitive function was assessed using the Hasegawa's Cognitive Assessment Scale (HDS-R) at baseline, 8 weeks, 12 weeks, and 16 weeks. However, scores declined four weeks after discontinuation, indicating that ongoing use may be necessary to maintain the benefit. The specific improvement was observed in the HDS-R scores, suggesting improvements in areas assessed by this scale, such as orientation, memory, and calculation. The researchers suggested that lion's mane may offer support for age-related cognitive changes.

Saitsu et al. (2019) also conducted a randomized, double-blind, placebo-controlled trial, published in *Nutrients*, in which healthy elderly individuals (50-79 years old) showed improved cognitive test scores after 12 weeks of supplementation with lion's mane compared to the placebo group. The study included 41 participants, divided into two groups: a lion's mane group (n=21) and a placebo group (n=20). All participants were deemed to be in good general health, without any major pre-existing health considerations that could interfere with the study results. The lion's mane group received 0.8 grams of lion's mane powder three times daily (total 2.4g/day). The placebo group received an equivalent amount of a placebo powder. Cognitive function was evaluated using the Cognitive Assessment System (CAS) at baseline, 4 weeks, 8 weeks, and 12 weeks. Specifically, they observed improvements in scores related to attention and processing speed. Four weeks after cessation of the intervention, the scores of the lion's mane group decreased significantly, returning to levels similar to the placebo group. This study provides further evidence suggesting potential cognitive benefits of lion's mane supplementation, although the effects appear to be reversible upon discontinuation. The researchers emphasized that the study results applied to healthy elderly individuals and may not generalize to other populations.

Another study, by Tsai-Teng et al. (2016) published in *Journal of Biomedical Science*, investigated the neurotrophic and nerve-supporting effects of lion's mane in vitro and in vivo. While this study primarily focused on mechanisms of action in cell cultures and animal models (mice), it provides insights into how lion's mane might influence cognitive function by potentially promoting nerve growth factor (NGF) production and reducing oxidative stress. The in vivo portion of the study involved administering lion's mane extract to mice and then assessing their cognitive performance on various behavioral tasks, such as the Morris water maze. The results suggested that lion's mane could support spatial learning and memory in mice. However, it's crucial to remember that findings from animal studies do not always translate directly to humans, so more studies are needed.

Does Lion's Mane Support Mood Balance and a Sense of Calm?

Research indicates that lion's mane may have a positive impact on mood, potentially supporting mood balance and a sense of calm. These effects may be particularly noticeable in specific populations. However, it is important to remember that the results from studies are not conclusive and individual experiences may vary.

Nagano et al. (2010) published a study in *Biomedical Research* involving 30 menopausal women aged 41-59 years, which reported statistically significant improvements in scores related to mood and a sense of calm after four weeks of lion's mane intake compared to the placebo group. The participants were recruited based on experiencing common menopausal experiences. The participants consumed cookies containing either lion's mane powder (2g/day) or a placebo. The lion's mane group received 1g of lion's mane powder in each of two cookies daily. A sense of calm and mood balance were assessed using the Hospital Anxiety and mood imbalance Scale (HADS) at baseline and after four weeks. This study suggests that lion's mane consumption may be associated with improved mood in this specific population. It's important to consider that the study population was limited to menopausal women, and the results may not be applicable to other groups.

Furthermore, a 2023 study by Docherty et al. in *Nutrients* investigated the effects of lion's mane on mood and cognition in healthy young adults (18-35 years old) experiencing self-reported feelings of occasional anxiousness and/or sadness. This randomized, double-blind, placebo-controlled trial found that participants taking a lion's mane supplement (a proprietary extract) for four weeks experienced improved mood scores and supported their management of stress, anger and confusion compared to the placebo group. The study involved 77 participants. The specific type of lion's mane extract and its standardization were not fully detailed in this abstract but were described as a proprietary blend. Mood was assessed using the Profile of Mood States (POMS) questionnaire. Cognitive performance was also assessed using several cognitive tests. These findings suggest that lion's mane may have a positive impact on mood in younger adults as well, but more research is needed to confirm these observations. This study is notable for including a younger demographic, which is often underrepresented in studies on cognitive and mood enhancement.

Does Lion's Mane Stimulate NGF Production?

Lion's mane may support the growth and maintenance of nerve cells by stimulating the synthesis of NGF. This potential mechanism of action is one of the key reasons why lion's mane is being investigated for its potential nerve-supporting properties. However, much of the research on NGF production is pre-clinical.

Li et al. (2018) in the *International Journal of Medicinal Mushrooms* confirmed that hericenones and erinacines, compounds found in lion's mane, stimulate the synthesis of NGF in vitro (in cell cultures). This effect is believed to contribute to the mushroom's potential benefits for cognitive function and nerve health. While in vitro studies suggest a potential mechanism, further studies are needed to confirm these effects in humans. Some additive-free Kinkatsudo products are processed to optimize extraction of these compounds.

Nagano et al. (2008) also investigated the effects of lion's mane on NGF expression in mice. The results suggested that lion's mane could promote NGF expression in the hippocampus, a brain region important for memory and learning. While these animal studies are promising, human studies are needed to determine if similar effects are observed in humans and to what extent NGF production contributes to the observed cognitive benefits.

Does Lion's Mane Affect Sleep Quality?

While some anecdotal reports suggest that lion's mane might improve sleep quality, there is currently limited clinical evidence to support this claim. Most studies have focused on cognitive function, mood, and nerve support, rather than specifically assessing sleep parameters. More research is needed to determine if lion's mane has any direct or indirect effects on sleep quality.

A few studies have explored the potential benefits of Lion's Mane for mood balance and a sense of calm, which, if effective, could indirectly improve sleep quality for individuals whose sleep is disrupted by these emotional experiences. However, dedicated studies that specifically measure sleep quality (e.g., using polysomnography or sleep questionnaires) are lacking. Future research should investigate the potential effects of lion's mane on various aspects of sleep, such as sleep duration, sleep latency, and sleep efficiency. Studies could examine the impact of Lion's Mane on sleep architecture, measuring time spent in different sleep stages like REM and deep sleep.

What is the Optimal Dosage of Lion's Mane in Clinical Studies?

The dosage of lion's mane used in studies varies, but generally falls within a range that appears to be potentially safe and supportive. Understanding the dosages used in successful trials can help guide your own supplementation strategy, however it is essential to consult with a healthcare professional for personalized advice.

In the Mori et al. (2009) study, the participants received 3 grams per day of lion's mane extract in capsule form for 16 weeks. Similarly, Nagano et al. (2010) used a dosage of 2 grams per day of lion's mane powder in cookies for four weeks. Docherty et al. (2023) found mood benefits in young adults using a lower dosage as well, in their study a proprietary extract was used so it may not be directly comparable to other studies. It is important to note that individual needs may vary, and the optimal dosage may depend on factors such as age, wellness status, and the specific product being used. Always consult with a healthcare professional to determine the most appropriate dosage for you. Different extracts will have different concentrations of active compounds and this will impact dosage. For example, a dual extract, which uses both hot water and alcohol, can concentrate a broader range of beneficial compounds, potentially requiring a smaller overall dosage compared to a single-extraction product.

Are There Any Side Effects of Lion's Mane?

Lion's mane is generally considered well-tolerated for most people, but, as with any supplement, it's important to be aware of potential side effects. While serious side effects are rare, some individuals may experience mild digestive discomfort. It is always wise to start with a low dose to assess tolerance.

Studies have generally not reported significant adverse effects associated with lion's mane supplementation. However, individual reactions can vary. Allergic reactions have been reported, although rarely. Potential indicators of an allergic reaction may include skin rash, itching, or difficulty breathing. It's always recommended to start with a lower dosage and gradually increase it to assess your tolerance. If you experience any adverse effects, discontinue use and consult with a healthcare professional. It is also crucial to ensure that the lion's mane supplement is from a reputable source to minimize the risk of contamination. Look for supplements that have undergone third-party testing to ensure purity and potency. Be cautious of products with vague ingredient lists or unverified claims.

Key Takeaways

• Lion's mane mushroom shows promise for supporting cognitive function, particularly in those experiencing age-related cognitive changes, according to some studies.
• Some studies suggest lion's mane may help support mood balance and a sense of calm, especially in menopausal women and young adults.
• Lion's mane contains compounds that may stimulate NGF production in vitro, potentially supporting nerve health. Further research is needed to confirm this in humans.
• Dosages used in studies typically range from 2 to 3 grams per day, but may vary depending on the specific extract or formulation.
• Lion's mane is generally considered well-tolerated, but individual reactions may vary, and it's important to consult with a healthcare professional before starting supplementation.

FAQ

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Disclaimer: This article is for informational purposes only and does not constitute medical advice. These statements have not been evaluated by the Food and Drug Administration. Supplements are not intended to diagnose, treat, cure, or prevent any disease. Individual results may vary. Consult a healthcare professional before making changes to your health regimen.