Can lion’s mane mushroom regrow brain cells?

Bottom line: Lion’s mane mushroom may support brain health by increasing nerve growth factor, but evidence suggests it was associated with neuroprotection, not regrowing brain cells in humans.

A dish of neurons under a microscope — they’re growing new branches, connecting in ways they didn’t before. The cause? Hericium erinaceus, the lion’s mane mushroom. But what the lab sees doesn’t always match what the world hears. Some claim lion’s mane can regrow brain cells in people, even reverse dementia. The truth isn’t that simple.

The jump from lab results to consumer claims is common, but with lion’s mane, it’s especially big. In the lab, the mushroom has been shown to increase nerve growth factor (NGF), a protein that helps neurons survive and grow. This has led to some bold ideas — that lion’s mane could be a miracle cure for neurodegenerative diseases. But the truth is more complex — and more interesting.

The Lab: Nerve Growth Factor, the Brain’s Lifeline

In controlled studies, lion’s mane has boosted NGF levels in cells. NGF is crucial for neurons — it helps them survive and grow. In cell cultures and animal models, lion’s mane has been linked to improved cognitive function and neuroprotection.

One study in Phytotherapy Research found that lion’s mane extract increased NGF in cultured neurons. But this doesn’t mean the mushroom can regrow brain cells. It means it supports the brain’s ability to maintain and repair itself. The study’s authors made it clear: these findings are preliminary, from in vitro and animal models — not human trials.

The Leap: From Lab to Living Room

The idea that lion’s mane can regrow brain cells in people is a stretch. For that to happen, the mushroom would need to do more than boost NGF — it would need to stimulate new neuron growth in the adult brain. But in humans, neurogenesis — the creation of new neurons — is very limited after early childhood.

That’s where science and speculation start to blur. Some companies and marketers have taken lab findings and turned them into claims: that lion’s mane can reverse brain damage, improve memory, or even treat Alzheimer’s. These claims are often based on animal studies or anecdotal reports — not human trials.

The Evidence: What We Know, What We Don’t

The science behind lion’s mane and neurogenesis is still in its early stages. While there is some evidence that the mushroom may support brain health, the claim that it can regrow brain cells is not supported by current research. Most studies have been small, short-term, or based on animals. Human trials are limited, and often not rigorous enough to confirm or deny bigger claims.

A small human study in Neurochemical Research found that lion’s mane extract improved cognitive function in older adults. But the study had only 10 participants, and results weren’t statistically significant. The researchers said more research is needed before any conclusions can be drawn.

Frequently Asked Questions

Q: Can lion’s mane mushroom regrow brain cells in humans?
A: There is no evidence to support the claim that lion’s mane can regrow brain cells in humans. While the mushroom may support brain health and neurogenesis in animal models, the leap to human application is not yet supported by rigorous research.

Q: Does lion’s mane mushroom help with memory or cognitive function?
A: Some studies suggest it may support cognitive function in older adults. But more research is needed to confirm this in humans.

Q: Is lion’s mane a miracle cure for Alzheimer’s or dementia?
A: There is no scientific evidence that lion’s mane can cure or reverse Alzheimer’s or dementia. While it may have some protective effects, it’s not a substitute for medical treatment.

Q: Are there any risks or side effects to taking lion’s mane?
A: Lion’s mane is generally considered safe, but more research is needed to understand its long-term effects. As with any supplement, it’s best to consult a healthcare professional before use.

Sources

• ¶Phytotherapy Research – “The Effect of Hericium erinaceus on the Expression of Nerve Growth Factor in Cultured Neurons”
• ¶Neurochemical Research – “The Effects of Hericium erinaceus on Cognitive Function in Elderly Subjects”

Educational Disclaimer

This article is for informational and educational purposes only. It is not medical advice, mental health advice, diagnosis, treatment guidance, or a recommendation to use any substance, supplement, therapy, or protocol.

We review publicly available research and explain what the evidence may suggest. Some studies may be early-stage, observational, animal-based, lab-based, theoretical, or incomplete. Always consult a qualified professional before making health-related decisions.

Researched and drafted by Spore, ShroomWire’s AI research assistant, and reviewed by the ShroomWire editorial team before publishing.