Lion's Mane Benefits for Women: What the Evidence Says
Lion's mane (Hericium erinaceus) has moved from specialist health-food shops onto mainstream shelves with remarkable speed, and for women navigating hormonal shifts, cognitive demands and the pressures of midlife, it's generating genuine scientific interest. Unlike many adaptogenic supplements that ride a wave of pure anecdote, lion's mane has a small but real body of human clinical research behind it. Small is the operative word, though, so let's look honestly at what the evidence supports, and where the gaps remain.
What makes lion's mane biologically interesting
Lion's mane contains two groups of bioactive compounds characteristic of the species: hericenones (found in the fruiting body) and erinacines (found in the mycelium). In laboratory research, both have been associated with stimulating nerve growth factor (NGF), a protein that supports the survival, maintenance and growth of neurons. NGF was discovered in the 1950s by neurobiologist Rita Levi-Montalcini, and its role in maintaining healthy neural tissue is well established. In preclinical research, some of lion's mane's active compounds also appear small enough to cross the blood-brain barrier, a significant practical hurdle for many compounds of interest, though this too comes mainly from animal and laboratory work rather than human studies.
It's this NGF-stimulating activity that underpins most of the cognitive and neurological interest in the mushroom.
What the human trials actually show
Two small trials do most of the heavy lifting in every evidence-based conversation about lion's mane, and both deserve honest description.
Cognition: a 2009 double-blind, placebo-controlled trial published in Phytotherapy Research (Mori et al.) tested lion's mane tablets at 3,000mg per day in 30 adults aged 50 to 80 with mild cognitive impairment, over 16 weeks. The supplemented group showed significantly higher scores on a cognitive function scale than placebo, and scores declined after supplementation ended, suggesting the effect depended on ongoing intake. Worth noting: these were older adults with existing mild impairment, not healthy midlife women, so the result doesn't automatically transfer.
Mood: a 2010 study (Nagano et al., Biomedical Research) is the one most directly relevant to women: 30 menopausal women were randomly assigned to eat lion's mane or placebo biscuits for four weeks, and the lion's mane group reported significantly reduced anxiety and irritability scores on standardised questionnaires. The researchers hypothesised the effect might be partly mediated by NGF activity in brain regions involved in emotional regulation, though four weeks and 30 participants makes this a promising signal, not a settled finding.
How lion's mane may support women: the evidence at a glance
| Area of interest | What the research suggests | Evidence level |
|---|---|---|
| Cognitive function | Improved cognitive assessment scores in older adults with mild impairment at 3,000mg/day over 16 weeks | Small human RCT |
| Mood and anxiety | Menopausal women consuming lion's mane reported lower irritability and anxiety vs placebo over 4 weeks | Small human RCT |
| Neuroprotection | Erinacines stimulate NGF synthesis in preclinical models | Animal / in vitro only |
| Perimenopause symptoms | Preclinical data on depressive-like behaviour and neural inflammation | Animal only |
| Sleep quality | Anecdotal reports and limited small studies on sleep disturbance scores | Very limited human data |
Lion's mane and the perimenopause connection
Perimenopause typically begins in the early-to-mid 40s and is characterised by fluctuating oestrogen levels that affect not just the reproductive system but cognition, mood stability and sleep. Many women describe "brain fog" — difficulty concentrating, word-finding problems and memory lapses — as one of the most disruptive symptoms of the transition.
Here's where honesty matters most in this article. Oestrogen plays a known role in maintaining neuronal health, and NGF supports neurons, so the idea that lion's mane's NGF activity could be especially relevant as oestrogen declines is a plausible hypothesis — but it is only that. No clinical trials have tested lion's mane for cognitive symptoms in perimenopausal women, and we won't dress a mechanism up as a result. What can be said: the one mood trial that exists was conducted in menopausal women, and it pointed in an encouraging direction. If you're building a wider strategy for this life stage, our complete guide to menopause supplements covers the broader landscape.
Dosage, forms, and what to look for
Not all lion's mane products are equivalent, and quality varies enormously in this category. The key things to check:
- Fruiting body vs mycelium. Hericenones come from the fruiting body, which is what the human mood and cognition studies used; erinacines come from the mycelium, studied mainly in animal models. Dual-extract products aim to capture both — prioritise products that specify fruiting body content.
- Beware grain-grown filler. Many budget supplements use mycelium grown on grain substrate, which can contain a significant proportion of starch rather than active fungal material. Products that specify beta-glucan content are being straighter with you.
- Dose. Clinical studies have used roughly 500mg to 3,000mg of extract daily, taken for at least 4 weeks before assessing benefit.
- Extraction. Hot-water or dual extracts are generally considered preferable to plain dried powder, because the bioactive polysaccharides need hot water to become fully extractable.
Worth knowing on the Kollo side: lion's mane extract is the lead botanical in Balance+, our menopause support sachet, at 1,500mg per daily serving alongside red clover, sage, ashwagandha (KSM-66®), magnesium, vitamin B6, folic acid and vitamin D3. We mention it for the ingredient facts rather than to promise outcomes; the honest evidence picture is the one set out above.
Combining lion's mane with a wider routine
Women approaching or in perimenopause are often managing several overlapping concerns at once — skin changes, joint comfort, energy and mood — and no single ingredient covers all of it. Collagen is a natural companion in the same routine: the body's collagen production declines at roughly 1% a year from the mid-twenties, and the decline accelerates around menopause, which is where the evidence for skin elasticity, hydration and the appearance of fine lines over 8 to 12 weeks fits in. Our complete guide to liquid marine collagen covers choosing well, and our guide to the best supplements for women over 40 [LINK] maps the wider landscape.
Is lion's mane worth adding to your routine?
The evidence base for lion's mane is more substantial than for many trend supplements, and the two human trials, on cognition in older adults with mild impairment and on mood in menopausal women, are genuinely encouraging. It is also still modest: small studies, short durations, and nothing yet in perimenopausal women specifically. For women weighing it up, it's a reasonable, generally well-tolerated addition to a thoughtful routine, provided the product is good quality and you go in with honest expectations: give it 4 to 8 weeks, judge it on your own experience, and treat it as support rather than a treatment for anything.
Kollo Health was co-founded by Jenni Falconer — TV presenter, Smooth Radio breakfast host, ten-time London Marathon runner and host of the RunPod podcast. Read her story and why she created Kollo.
