Growing research suggests reishi mushrooms may influence allergies through early immune and histamine signals
Allergy season can be brutal, and many sufferers are looking past the pharmacy aisle for answers. That is where reishi mushrooms enter the conversation. The ancient fungus has drawn fresh attention from researchers and traditional medicine practitioners for its possible role in calming the immune response that drives sneezing, itchy eyes and congestion.
Before you swap out your antihistamine, here is what the evidence actually says about reishi mushrooms, allergies and broader immune support.
How Reishi Mushrooms May Ease Allergy Symptoms
Allergies happen when the immune system overreacts to harmless substances like pollen. The UK Centre of Chinese Medicine argues that mushroom supplements may address several underlying factors in that response, with reishi standing out.
“Reishi mushrooms may offer the most benefits for allergy sufferers. It is rich in triterpenoid compounds like lanostan which has anti-inflammatory and anti-histamine activity, which may help to stabilize the cells which release histamine. Reishi also contains immune-modulating polysaccharides which may reduce the over-reactiveness of the immune response and down-regulate histamine levels and inflammation,” the UK Centre of Chinese Medicine says.
Mogo Farm echoes the point, noting that reishi has been used in traditional Chinese medicine for centuries because of its adaptogenic and immune-modulating properties. “Instead of overstimulating the immune system (which could worsen allergies), Reishi helps modulate it by promoting regulatory T cells and reducing excessive immune responses. This can help prevent the overproduction of histamines that cause allergy symptoms,” the outlet says.
What the Research Says About Reishi and the Immune System
Unlike conventional antihistamines, which block histamine after it has been released, reishi may help regulate the allergic response at multiple points. A review of the scientific literature found that ganoderic acids, a class of triterpenes in reishi, can inhibit the release of histamine from mast cells in laboratory studies. Those are the immune cells responsible for many common allergy symptoms, including sneezing, itching, a runny nose and watery eyes.
The same review suggests reishi may help balance Th1 and Th2 immune responses, potentially reducing the exaggerated activity behind allergic conditions.
Still, more recent reviews caution that much of this evidence comes from laboratory and preclinical research. There is currently insufficient high-quality clinical evidence to confirm reishi as an effective treatment for seasonal allergies in humans, and larger clinical trials are needed before definitive conclusions can be made.
Other Potential Benefits of Reishi Mushrooms
Memorial Sloan Kettering lists several additional uses people seek from reishi, including boosting the immune system, increasing strength and stamina, lowering cholesterol and treating lower urinary tract symptoms in males such as having to urinate at night, weak urine flow and difficulty controlling flow.
Reishi is also used by some cancer patients as an immunostimulant. “In small clinical studies, reishi increased plasma antioxidant capacity, enhanced both immune and tumor response in cancer patients, and suppressed development of colorectal adenomas,” Memorial Sloan Kettering reports. The hospital notes that reishi use led to subjective improvements in nausea, fatigue, appetite and depression in some patients, while a reishi extract was found to have toxic effects in leukocytes in one study. Further research is needed to determine reishi’s safety and effectiveness as an adjunctive cancer treatment.
How to Take Reishi Mushrooms Safely
Quality matters when choosing a reishi product. “Reishi can be consumed in various forms, including capsules, extracts, or as a powdered supplement. It can also be brewed into a tea for a soothing and enjoyable experience,” Napiers the Herbalists says.
Consistency also matters. Mogo Farm warns that reishi is not a quick fix and that it may take two to four weeks to notice improvements. People taking blood-thinning medications or living with immune disorders should talk to a healthcare professional before adding reishi to their routine, as it can interact with certain medications.
This article was created by content specialists using various tools, including AI.
