Lion's Mane and focus: what does research say?
Short answer: Research into lion's mane and focus is ongoing, but the findings are still limited. The research includes studies on cells and mice, one study in older adults, and three small studies in healthy adults. An effect on focus or concentration has not been demonstrated, and no health claims for lion's mane have been approved in the EU.
Last updated: October 30, 2026 · Written by Florian Fermin
Lion's mane and focus are increasingly mentioned together online, in videos, on forums, and sometimes in online stores. I understand why people search for it. But precisely because we sell lion's mane, I want to be very clear here about what is and isn't known.
Many people also search for lion's mane in connection with ADHD. There is no evidence that lion's mane helps with ADHD, and no research has been done in people with ADHD. If you have questions about this, talk to your doctor. The rest of this article covers what has been studied.
What research has been done on lion's mane and focus?
Most of the research has been done on cells and mice. Human research includes one study of 30 Japanese adults aged 50 to 80 and three small studies of healthy adults, with 69 participants in total. That's not much, and the studies were also short.
Lion's mane (bearded tooth fungus, Hericium erinaceus) is an edible mushroom that you can find as a powder, capsule, extract, or tincture. Focus and concentration depend on many things, and a supplement is at most a small part of your routine.
Why is lion's mane linked to focus?
Lion's mane contains compounds such as hericenones and erinacines, which have been studied in the lab. Online, people quickly make the leap from that to concentration. That's a big leap, because the research is mainly on cells and mice.
Mori and colleagues looked at gene expression in a human cell line and in mice (Mori et al., 2008). Lai and colleagues conducted cell culture research using a water extract of lion's mane (Lai et al., 2013).
What happens in a petri dish or in a mouse cannot simply be translated to attention or concentration in humans.
What studies have been done, and what was measured?
There is lab and animal research, one study involving 30 Japanese adults aged 50 to 80, and three small studies in healthy adults with a total of 69 participants. The table shows who took part and what was measured.
| Study | Who or what was studied | What was measured | Limitation |
|---|---|---|---|
| Mori et al., 2008 | A human cell line (1321N1) in a culture dish, and mice | Gene expression | Basic research, no humans |
| Lai et al., 2013 | NG108-15 cells in a culture dish | Growth of neurites | Cell culture only |
| Mori et al., 2009 | 30 Japanese adults aged 50-80 | Score on a cognitive test scale, 16 weeks | Small group, older age group |
| Docherty et al., 2023 | 41 healthy adults aged 18-45 | Cognitive tasks, stress, and mood, once and over 28 days | Pilot study, small group |
| Surendran et al., 2025 | 18 healthy adults aged 18-35 | Cognition and mood after a single dose | Very small group, single dose |
| Evans et al., 2026 | 10 healthy adults aged 18-55 | Attention, inhibition, and BDNF in the blood, 4 weeks | Pilot study, 10 participants |
The three studies in healthy adults don't yet give us a clear picture. The results are mixed and limited (Docherty et al., 2023, Surendran et al., 2025, Evans et al., 2026).
To find out exactly what was measured in each study, read our article about lion's mane and focus in healthy adults.
Why can't we draw conclusions from this research yet?
The groups were small, the studies were short, and each study used a different product. A different score on one computer task in a handful of healthy young adults says little about how well you concentrate at school, at work, or at home.
- Small groups and short duration. 10 to 41 participants, for periods ranging from one dose to 16 weeks. Any difference found could also be due to chance.
- Different levels of research. Cell cultures and mice tell us nothing about behavior or attention.
- Different products. Each study used a different preparation and amount.
Why don't we promise improved focus?
Under European food information rules, information about a food, including a food supplement, must not be misleading (Article 7 of Regulation (EU) No 1169/2011). This also applies to advertising and the way a product is presented.
In addition, there are no approved health claims for lion's mane in the EU, including claims about concentration.
That's why we don't make any claims about focus on our packaging. If you see such a claim from another brand or in a video, I would view it critically.
What does this mean for you?
Lion's mane is a food and supplement, not a medicine. If you take medication, consult your doctor or pharmacist first before taking a supplement alongside it.
If you are allergic to mushrooms or fungi, lion's mane is not suitable, and supplements are not intended for children. Read more in lion's mane side effects. All research on the mushroom itself is included in our overview of research and facts about lion's mane.
Summary in 3 points
- Research into lion's mane and focus is underway, but it mainly involves cells, mice, and a few small studies in adults.
- The three studies in healthy adults (69 participants in total) show mixed and limited results.
- There are no approved health claims for lion's mane and focus. If you take medication, consult your doctor first.
Frequently asked questions
Does lion's mane help with focus?
That has not been demonstrated. Research is underway, but human studies are small and short, and the results are still limited.
Has lion's mane been studied in children?
No, we didn't find any. All human studies were conducted in adults. Supplements are also not intended for children.
Can I use lion's mane alongside medication?
Discuss this with your doctor or pharmacist first. They can assess whether it is advisable in your situation.
What should you make of stories about lion's mane and focus on social media?
Personal stories prove nothing, because people sometimes notice something because they expect it. Until there is good research, every claim remains speculation.
Sources
- Mori K, Obara Y, Hirota M, Azumi Y, Kinugasa S, Inatomi S, Nakahata N (2008). Cell study of Hericium erinaceus in a human cell line (1321N1). Biological & Pharmaceutical Bulletin, 31(9), 1727-1732. Europe PMC 18758067
- Lai PL, Naidu M, Sabaratnam V, Wong KH, David RP, Kuppusamy UR, Abdullah N, Malek SNA (2013). Cell study of Hericium erinaceus from Malaysia. Int J Med Mushrooms, 15(6), 539-554. Europe PMC 24266378
- Mori K, Inatomi S, Ouchi K, Azumi Y, Tuchida T (2009). Double-blind, placebo-controlled study of Yamabushitake (Hericium erinaceus) in adults aged 50 to 80 years. Phytotherapy Research, 23(3), 367-372. Europe PMC 18844328
- Docherty 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, 15(22), 4842. Europe PMC 38004235
- Surendran G, Saye J, Binti Mohd Jalil S, 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, 12, 1405796. Europe PMC 40276537
- Evans C, Kalman D, Goodrich J, et al. (2026). A Pilot Proof-of-Concept Study to Evaluate the Physiological and Cognitive Impacts of Hericium erinaceus on Healthy Adults. Nutrients, 18(19), 3177. Europe PMC 42884628
- Regulation (EU) No 1169/2011 on the provision of food information to consumers, Article 7. EUR-Lex
You can find all forms of our lion's mane on the buy lion's mane page.
This article is for informational purposes only and is not medical advice. Dietary supplements are not a substitute for a varied and balanced diet and a healthy lifestyle. If in doubt, during pregnancy, or when taking medication, consult your doctor or pharmacist.
Lion's Mane by GOYU
Available as powder, capsules (without fillers), extract capsules (20:1), and tincture.
