Lion's Mane coffee: what it is, what the research measured and what it did not
If you typed lion's mane coffee into Google, you have probably already read that it is good for the brain. That is the claim that sells the category, and it is the one we are most careful with. This article walks through what Lion's Mane is, what the research on it has actually tested, and where the honest line sits for a food that contains it.
What Lion's Mane is
Hericium erinaceus is a white, shaggy mushroom that grows on hardwood trees in Asia, Europe and North America. It looks like a cluster of icicles or, with some imagination, a lion's mane. It has been eaten as a vegetable in China and Japan for centuries, where it is called hou tou gu and yamabushitake, and it has a mild, slightly seafood like taste when cooked fresh. In a coffee blend it is used as a dried extract and you cannot taste it.
The compounds people talk about
Two groups of compounds give Lion's Mane its reputation: hericenones, found mainly in the fruiting body, and erinacines, found mainly in the mycelium. In laboratory work these have been studied for their effect on nerve growth factor, a protein involved in the maintenance of nerve cells. That laboratory finding is the origin of almost every brain claim you will read about Lion's Mane. It is a real finding. It is also a cell and animal finding, and the gap between that and a person drinking a coffee is the whole story.
The human studies, honestly
There are a small number of human trials. The most cited is a 2009 Japanese study of 30 older adults with mild cognitive complaints who took Lion's Mane tablets for 16 weeks, with scores improving during the trial and dropping after stopping. There is a 2010 study of 30 women on mood measures over four weeks. There are a few more recent small trials, some with young adults, looking at reaction time or subjective measures after single doses or short courses. The common threads: small groups, short durations, specific populations, and extract amounts that are generally larger than what a blended coffee serve contains. Research suggests there is something worth studying. It does not yet tell you what a food quantity does for a healthy person over a year, and anyone who says it does is ahead of the evidence. Our Lion's Mane research page lists the studies with what each one measured.
What a Lion's Mane coffee can honestly say
That it contains Lion's Mane. That Lion's Mane has a long traditional use. That early research is interesting. That the coffee still tastes like coffee. That is the list. In Australia a mushroom coffee is a food, and foods cannot claim to treat, prevent or improve a medical condition or a function of the body without the evidence and the approvals to back it, which this category does not have. Mello Mushroom Coffee lists Lion's Mane as one of six mushrooms in the blend on the pack; the pack does not print a per mushroom amount, so we do not quote one.
Fruiting body, mycelium and the label
Because hericenones and erinacines sit in different parts of the mushroom, the fruiting body versus mycelium question comes up a lot. We have written about that separately in our fruiting body vs mycelium article. The short version is that the label lists a six mushroom blend and we are confirming the extraction detail with the supplier before we say more than that. We would rather say less and be right.
Why put it in coffee at all
Two practical reasons. The first is habit: people already drink coffee every morning, so a blend is the easiest way to take a mushroom daily without adding a capsule to the routine. The second is that the caffeine does the immediate work. A serve of Mello is about 48mg of caffeine, about half a double shot, and that is what you feel in the first hour. The Lion's Mane is the slow, daily, traditional part, and it will not announce itself. If you buy a Lion's Mane coffee expecting to feel the mushroom, you will be disappointed, and we would rather say that here than in a refund email.
How Mello uses it
Lion's Mane is one of six mushrooms in both blends, alongside Cordyceps, Reishi, King Trumpet, Shiitake and Turkey Tail. The coffee is instant arabica with the blend, coconut milk and MCT oil. The matcha is ceremonial grade matcha with the same blend, blue spirulina and Himalayan pink salt. Both are 30 serves, about 48mg of caffeine, no added sugar. Our Lion's Mane coffee guide covers the how to and the taste; this article is the research half.
Who should be careful
Anyone with a mushroom allergy should avoid both blends. Lion's Mane is generally well tolerated in the trials, with occasional reports of stomach upset or skin irritation, but the trials are small and short, so anyone pregnant, breastfeeding, on medication or managing a medical condition should talk to a GP or pharmacist first. The coffee blend contains coconut milk and MCT oil, so anyone with a coconut allergy should choose the matcha or skip both. Read the ingredient list on the pack.
The short version
Lion's Mane is an edible mushroom with a long food history and an interesting but small research base, most of it in cells, animals and short human trials at amounts larger than a coffee serve. A Lion's Mane coffee can honestly say it contains the mushroom and tastes like coffee; it cannot honestly promise your brain anything. Mello includes it as one of six mushrooms, says so on the pack, and leaves the claims to the research page.