The lion’s mane mushroom has gained prominence in the field of scientific research, with early studies indicating its potential for brain health. Recent research, conducted on Tuesday, July 6, 2026, suggests that regular mushroom consumption may lower the risk of mild cognitive impairment, a condition that precedes dementia. Within this context, *Hericium erinaceus*, popularly known as lion’s mane, has attracted special attention from scientists.
Research on Lion’s Mane and Brain Health
Skye Chilton, an expert with more than a decade of experience in mushroom extracts for supplements, highlights the significant increase in evidence for the benefits of lion’s mane over the last fifteen years. He explains that, although it has been a traditional component in Chinese Medicine for centuries, it was clinical trials with humans during this period that solidified the understanding of its potential effects on memory and concentration, going beyond popular belief.
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Researchers involved in two placebo-controlled studies, one in 2009 and the other ten years later, observed improvements, albeit modest and temporary, in tests of memory and reasoning. The trials were carried out with older adults who had mild cognitive decline. In them, participants were given dried lion’s mane mushrooms or a placebo. Although each study involved a few dozen people, the randomized, double-blind methodology — where neither participants nor scientists knew who received the actual treatment — lends greater credibility to the results.
Understand how lion’s mane works in the brain
Scientific interest persists because of the chemical distinction between the lion’s mane mushroom and its mycelium, the underground structure that resembles roots. Chilton explains that the mushroom contains hericenones, while the mycelium has erinacins, including Erinacin A. Both groups of compounds are the subject of study for their potential impacts on brain and nerve cells.
A 2020 pilot study demonstrated improvements in memory and daily functionality in adults with early-stage Alzheimer’s who received an extract enriched with Erinacin A, compared to a placebo. In the laboratory, Erinacin A showed the ability to cross the blood-brain barrier, a protection that prevents many substances from reaching the brain. This compound stimulates BDNF and NGF, proteins crucial for the growth and survival of brain cells, a factor that attracts the interest of the pharmaceutical industry, according to Chilton.
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Extract or mycelium: how to choose the right supplement
Chilton cautions that lion’s mane’s effects are not immediate, unlike stimulants like caffeine or fast-acting nootropic supplements. He compares mushroom consumption to a “long-term investment in your brain,” emphasizing the need for continued use for potential benefits.
The slow action of compounds is one of the factors that contribute to the complexity of the supplements market. Chilton warns that products labeled as “lion’s mane mycelium” and “lion’s mane mushroom extract” may have very different chemical compositions. Mycelium is often grown on grain substrates such as rice or oats and cannot be completely separated, becoming an integral part of the final product. To ensure authenticity and composition, Chilton advises consumers to request a certificate of analysis directly from the brand, a laboratory document that details the exact contents of each batch.
Although the controlled studies are on a smaller scale, the consistency of the results in five independent clinical trials, all placebo-controlled and using different parts of the lion’s mane fungus, is considered very promising by Chilton. He expresses the expectation for larger clinical trials in the future to corroborate these initial findings. This consistency across different laboratories is an important indication for nutrition researchers that a supplement can, in fact, meet the expectations generated.