Clinical Report: Allergies, Meet Your Match in Matcha

Overview

A study at Hiroshima University found that hot-water-extracted matcha significantly reduced sneezing in an ovalbumin-sensitized mouse model of allergic rhinitis. Despite this effect, traditional immune markers of allergy remained unchanged, suggesting a unique mechanism of action along the sensory nerve pathway.

Background

Allergic rhinitis is a common condition that significantly impacts quality of life and productivity. Current treatments primarily focus on intranasal corticosteroids and antihistamines, but many patients seek alternative therapies. Understanding the potential role of dietary supplements like matcha could provide new avenues for managing allergy symptoms.

Data Highlights

The study administered hot-water-extracted matcha at 250 mg/kg to mice and observed a significant reduction in sneezing during allergen exposure.

Key Findings

• Hot-water-extracted matcha reduced immediate allergen-induced sneezing in mice.
• Nasal hyperresponsiveness was suppressed, as measured by histamine-triggered sneezes.
• Traditional immune markers, including IgE levels and inflammatory cell infiltration, remained unchanged.
• The mechanism of action appears to involve the sensory nerve pathway rather than direct immune modulation.
• Neuronal activation in the trigeminal system was reduced, indicated by decreased c-Fos expression.

Clinical Implications

While matcha shows promise in reducing sneezing responses in animal models, its clinical applicability in humans remains uncertain. Healthcare providers should remain cautious and await further studies to establish safety and efficacy before considering matcha as a treatment option for allergic rhinitis.

Conclusion

Reinforce the need for further research and its implications for clinical practice.

References

1. Hiroshima University, npj Science of Food, 2023 -- Allergies, Meet Your Match in Matcha
2. Allergic Rhinitis and Its Impact on Asthma (ARIA)‐EAACI Guidelines—2024–2025 Revision: Part I—Guidelines on Intranasal Treatments - PMC
3. Clinical Effects of Polyphenolic Compounds on Allergic Rhinitis: A Systematic Review and Meta-Analysis - ScienceDirect
4. The ASCO Post — Green Tea
5. Contact Lens Spectrum — Allergy, Eyedrops and Contact Lenses
6. The ASCO Post — Green Tea OF NOTE
7. Contact Lens Spectrum — CONTACT LENS DESIGN & MATERIALS
8. The ASCO Post — Green Tea
9. Contact Lens Spectrum — Allergy, Eyedrops and Contact Lenses
10. Allergic Rhinitis and Its Impact on Asthma (ARIA)‐EAACI Guidelines—2024–2025 Revision: Part I—Guidelines on Intranasal Treatments - PMC
11. Clinical Effects of Polyphenolic Compounds on Allergic Rhinitis: A Systematic Review and Meta-Analysis - ScienceDirect