Quick answer: lion's mane is the most talked-about mushroom in wellness content right now, almost entirely because of one specific mechanism — its bioactive compounds (hericenones and erinacines) appear to stimulate nerve growth factor (NGF), a protein involved in neuron survival and growth. This is a genuinely distinct mechanism from other functional mushrooms, and it's backed by a growing body of human research — though it's worth being precise about how far that research has actually gone, since the trend often overstates it.
The mechanism: what NGF actually is
Nerve growth factor is a protein that supports the survival, growth and maintenance of neurons, particularly relevant to memory-related brain regions. NGF production naturally declines with age, and reduced NGF signalling has been studied in connection with age-related cognitive changes. Lion's mane contains hericenones (from the fruiting body) and erinacines (primarily from the mycelium), both shown in laboratory research to stimulate NGF synthesis. A 2023 University of Queensland study went further, identifying specific compounds within lion's mane — N-dephenylethyl isohericerin and its derivative hericene A — that directly promote neurite outgrowth (the extension of nerve cell connections) in laboratory neuron cultures.
What the human trials actually show
A 2023 double-blind, placebo-controlled pilot study (Docherty et al., published in Nutrients) examined both acute and 28-day chronic supplementation with lion's mane in healthy young adults, finding improvements in speed of cognitive performance measured 48 hours after a single dose, alongside reduced subjective stress following the 28-day period. This was the first study to demonstrate an effect in healthy young adults specifically, building on earlier research conducted primarily in older adults with mild cognitive impairment.
A separate 2025 randomised, double-blind, placebo-controlled crossover study (published in Frontiers in Nutrition, University of Surrey) examined acute effects of a standardised Hericium erinaceus extract on cognition and mood in 18 healthy younger adults, adding to the same body of acute-effect research.
The honest limitation
Independent evidence reviews are more measured than wellness content typically is. The Alzheimer's Drug Discovery Foundation's research assessment describes cognitive effects across the available trials as "mixed," specifically noting that clinical trials to date have used small numbers of participants over short durations, and that "well-designed larger and longer clinical trials are needed." One trial in Alzheimer's disease patients over 49 weeks found improvements in activities of daily living but no significant difference in cognitive function measures compared to placebo. This is worth stating plainly: the mechanism is genuinely interesting and increasingly well-characterised at the laboratory level, but the human clinical evidence, while growing and generally positive in direction, is still built on a foundation of small trials rather than the large-scale studies that would settle the question definitively.
Why lion's mane is different from the other mushrooms in a blend
This is worth being direct about: in a five-mushroom complex, lion's mane is often included at a comparatively modest dose relative to species like shiitake or chaga, since it's one ingredient among several rather than the headline compound. If cognitive effects specifically are what you're after, a dedicated single-species lion's mane product at a considerably higher dose — closer to the 3g extract doses used in the clinical trials above — would more directly reflect what the research has actually tested, rather than a broad immune-focused complex where lion's mane plays a supporting role.
Our Bio Mushroom Boost includes lion's mane at 20mg fruiting body alongside four other organic mushrooms — a broad complex rather than a cognition-focused single-species product, and we think it's more honest to say that plainly than let the trend imply otherwise.
Frequently Asked Questions
Does lion's mane actually improve memory?
The evidence points in a promising direction but isn't settled. Multiple small randomised controlled trials have found improvements in cognitive performance measures and mood, and the NGF-stimulation mechanism is increasingly well-characterised in laboratory research. Independent evidence reviews describe the overall human trial evidence as mixed, citing small sample sizes and short trial durations as genuine limitations that larger studies still need to address.
What's the difference between hericenones and erinacines?
Both are bioactive compound classes found in lion's mane linked to NGF stimulation. Hericenones are primarily found in the fruiting body (the mushroom itself), while erinacines are primarily found in the mycelium (the root-like growing structure). This is part of why fruiting body vs mycelium sourcing matters for this specific species.
How much lion's mane do I need for cognitive effects?
The clinical trials showing cognitive and mood effects have generally used higher doses (around 3g of standardised extract) than what's typically included in a broad multi-mushroom immune complex, where lion's mane is usually a supporting ingredient rather than the headline dose. If cognition specifically is the goal, check the declared lion's mane dose on any product against what the research has actually tested.
This article is for general information and does not constitute medical advice. Speak to a healthcare professional before starting any new supplement, particularly if pregnant, breastfeeding, or managing a diagnosed health condition.
BioBodyBoost — Halal Certified UK Supplements
Use code HALAL10 for 10% off your first order — halal approved under UHA Certificate Ref. 24623, vegan, UK made. Shop Immunity UK →
