At the 2026 Sleep Meeting, a 2,000-Year-Old Mushroom Outscored Melatonin

The Oasis Health Journal · Submitted July 14, 2026 · 8:19 AM ET

Melatonin has run the sleep aisle unopposed for years. It is the default. It is the bottle in your aunt's junk drawer, sitting next to the loose batteries. So it was a small scene when a mushroom showed up at a sleep conference and quietly outscored it.

The setting was SLEEP 2026, in a late-breaking session, which is the academic version of crashing a party with a good story. A physician named Ching Xie presented a randomized trial under a title I could not improve on: 'Can't sleep? Take some shrooms.' Apparently deadpan is contagious.

Here is what happened. Researchers took 218 adults with chronic insomnia and split them down the middle. Half got melatonin, 5 mg a night. Half got reishi mushroom extract, 980 mg a night, standardized to 6% triterpenes. Eight weeks. The scorecard was the Insomnia Severity Index, a questionnaire that turns 'I stared at the ceiling again' into an actual number.

Both groups slept better. That is the part people skip. Melatonin worked, dropping its insomnia score by 5.6 points. Reishi dropped 8.7. The gap between them was 3.1 points (95% confidence interval 2.0 to 4.2), and the p-value had enough zeros to make a statistician nod. The effect held after adjusting for age, sex, and how badly people were sleeping to begin with. Almost everyone finished, 209 of 218, and nobody reported a serious side effect.

Now the cold water, because this is a health journal and not a billboard. This was a single, short trial presented as a conference abstract, which means it has not run the peer-review gauntlet yet. One poster is a lead, not a verdict. We do not know if the edge holds past eight weeks, who responds best, or whether it survives a larger study. Do not throw out your melatonin over a slideshow. But it is a genuinely interesting slideshow.

So what is reishi, besides a mushroom with a good agent? Its formal name is Ganoderma lucidum, called lingzhi in China, where it has been used for roughly 2,000 years and nicknamed the mushroom of immortality, which is a lot to live up to. You do not saute it. It is woody, bitter, and about as edible as a coaster, which is why it goes into an extract. Inside are more than 400 compounds, but the two headliners are triterpenes (the ganoderic acids the trial standardized for) and polysaccharides, including the beta-glucans. The proposed sleep mechanism runs through GABA, the brain's brake pedal, although most of that wiring has so far been mapped in animals, including a rat study where reishi spore extract smoothed out disturbed sleep.

Sleep is actually reishi's side hustle. Its day job for centuries has been the immune system. A Cochrane review, which is the gold standard of 'we read everything and stayed skeptical,' examined reishi in cancer care. The verdict was measured: not a first-line treatment, but as an add-on it nudged immune markers like CD3, CD4, and CD8 cells up a few points, bumped natural killer cell activity, and improved quality of life in some patients. It was generally well tolerated. The studies were also small and a bit wobbly, which the reviewers said out loud. So reishi is less a magic bullet and more a quiet team player that keeps turning up in the immune and now the sleep box scores.

A word on safety, because 'natural' and 'harmless' are not synonyms. Reishi can slow blood clotting, so pairing it with warfarin or other blood thinners is a real bleeding risk. Its triterpenoids can inhibit CYP450 liver enzymes, the machinery your body uses to process many prescription drugs, so interactions are possible. There are rare reports of liver injury, at least one involving powdered reishi and alcohol together. If you are pregnant, on blood thinners, managing a liver condition, or taking prescription medication, this is a talk-to-your-clinician moment, not an add-it-to-cart-at-midnight one.

If you do go looking, quality matters more than usual with mushrooms, because an extract is only as good as what it was grown from and how fresh it is. A proper reishi extract should be standardized, not mystery powder, and the same goes for broader medicinal mushroom blends if you want the immune angle too. Our supplements are professional-grade and sourced fresh per order, so nothing sits aging on a shelf quietly losing potency. That does mean shipping runs a little slower than the giant warehouses. A mushroom that took 2,000 years to reach a podium can survive a couple of extra days in a box.

And if reishi is not your speed, the incumbents are still on the shelf. Melatonin did lower insomnia scores in this very trial, and magnesium glycinate remains a low-drama option for winding down. The point of the reishi study is not that the old standbys failed. It is that the sleep aisle might have room for a fungus.

This article is for education, not medical advice. Reishi can interact with blood thinners and other medications, so talk with a qualified clinician before starting it, especially if you are pregnant, nursing, on prescription drugs, or managing a health condition.

Sources

1. Reishi Mushroom Extract Outperformed Melatonin for Chronic Insomnia in New Study (Patient Care Online, SLEEP 2026)
2. A Summary of a Cochrane Review: Ganoderma lucidum (Reishi mushroom) for the treatment of cancer
3. Ganoderma lucidum (Reishi mushroom) for cancer treatment (Cochrane Database of Systematic Reviews)
4. Ganoderma lucidum spore extract improves sleep disturbances in a rat model of sporadic Alzheimer's disease
5. Reishi Mushroom (Memorial Sloan Kettering Cancer Center, About Herbs)
6. A Review of Bioactive Components and Pharmacological Effects of Ganoderma lucidum
7. Reishi Mushroom Uses, Benefits and Dosage (Drugs.com)
8. Ganoderma lingzhi (Reishi Mushroom)-Induced Acute Liver Injury in the Setting of Alcohol Use: A Case Report