A new study highlights a possible link between matcha for allergies and reduced sneezing, offering new insight into seasonal allergy relief. The study, published in NPJ Science of Food, examined how matcha affects allergy-like symptoms in mice.
The scientists from Hiroshima University, together with Osamu Kaminuma, who works there as a professor, discovered that matcha reduces the brain activity that controls sneezing without affecting the normal functions of the immune system.
The study found that mice given matcha extract sneezed significantly less when exposed to allergens. The effect of matcha for allergies did not affect the main immune responses involving IgE, mast cells and T cells. The scientists found that the brainstem activity that controls the sneeze reflex was reduced.
Kaminuma said: “We do not expect matcha to have a substantial therapeutic effect on the allergy itself, although it may provide some symptomatic benefit by relieving allergy-associated sneezing.”
Experts say compounds in matcha for allergies, including catechins, epigallocatechin gallate (EGCG) and quercetin, may contribute to its effects. Rutgers Robert Wood Johnson Medical School Allergist-Immunologist Catherine Monteleone said catechins can help reduce sneezing, nasal itching and itchy eyes.
Dietitian Keri Gans added: “However, this was an animal study, so we need human research before we can draw any definitive conclusions.”
Allergologist Sebastian Lighvani of Northwell Lenox Hill Hospital said the findings are “fascinating,” adding: “Matcha appears to abolish the signals related to sneezing.”
Doctors emphasize that matcha for allergies should not replace standard treatments. Monteleone said, “Green tea or matcha may not reduce all allergy symptoms, and other allergy medications may still be necessary.”
Professor David Corry of Baylor College of Medicine added: “The only caution is don’t go too crazy with it and start drinking eight to 10 cups a day. Keep it to no more than two to three cups a day.”
Although matcha for allergies shows promise, experts say more human studies are needed. Researchers also noted that the study used doses much higher than usual consumption levels.
