Evidence supporting the use of: Green tea
For the health condition: Allergies (respiratory)

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Synopsis

Source of validity: Scientific
Rating (out of 5): 2

Green tea (Camellia sinensis) has been investigated for its potential to support or treat respiratory allergies, such as allergic rhinitis and asthma. The scientific interest stems from its rich content of polyphenolic compounds, particularly epigallocatechin gallate (EGCG), which exhibits anti-inflammatory and antioxidant properties. Several in vitro and animal studies have demonstrated that EGCG can inhibit the release of histamine from mast cells and suppress the production of pro-inflammatory cytokines involved in allergic responses. For example, research published in the Journal of Agricultural and Food Chemistry (2002) showed that green tea polyphenols inhibited IgE-mediated allergic reactions in mice and reduced the symptoms of allergic rhinitis. However, human clinical evidence remains limited. Small pilot studies and some randomized controlled trials have suggested mild benefits in reducing nasal symptoms or airway inflammation, but results are inconsistent and often involve small sample sizes or short durations. Green tea is not a standard therapy for allergies, and its effects are generally modest compared to conventional antihistamines or corticosteroids. Traditionally, green tea has not been specifically used as an anti-allergy remedy in herbal medicine systems, but its general health-promoting properties have contributed to its popularity. Overall, while preclinical data are promising, current scientific evidence for green tea’s effectiveness in treating respiratory allergies in humans is weak to moderate, justifying a cautious rating of 2 out of 5.

More about green tea
More about Allergies (respiratory)

Other health conditions supported by green tea

Acne
Addictions (coffee, caffeine)
Age Spots
Aging (prevention)
Allergies (food)
Allergies (respiratory)
Alzheimer's Disease
Antibiotics (alternatives to)
Anxiety
Anxiety Disorders
Appetite (excessive)
Arteriosclerosis
Arthritis
Asthma
Athletic and Exercise Aids
Autoimmune Disorders
Belching
Benign Prostate Hyperplasia
Bites and Stings
Bleeding (internal)
Blood in Urine
Bloodshot Eyes
Breast Lumps
Cancer (natural therapy for)
Cancer (prevention)
Cardiovascular Disease
Cartilage Damage
Cellulite
Cervical Dysplasia
Chemotherapy (reducing side effects)
Chicken Pox
Cholesterol (high)
Cholesterol (low)
Chronic Obstructive Pulmonary Disorder
Circulation (poor)
Circulation (to the brain)
Cirrhosis of the Liver
Colds (antiviral)
Colds (decongestant)
Colds (general)
Colds (prevention)
Colds (with fever)
Colic (children)
Colitis
Colon (atonic)
Colon (spastic)
Concentration (poor)
Congestion
Congestion (bronchial)
Congestion (lungs)
Congestion (lymphatic)
Congestion (sinus)
Conjunctivitis
Constipation (adults)
Contagious Diseases
Convalescence
Cough (damp)
Cough (dry)
Cough (general)
Cough (spastic)
Cramps (menstrual)
Crohn's Disease
Cuts
Cystic Breast Disease
Cystic Fibrosis
Cytomealovirus
Dandruff
Debility
Dementia
Denture Sores
Depression
Dermatitis
Diabetes
Diabetic Retinopathy
Diarrhea
Digestion (poor)
Down Syndrome
Endometriosis
Epstein Barr Virus
Eye Infections
Eye Problems
Eyes (red or itching)
Fibroids (uterine)
Free Radical Damage
Fungal Infections
Glaucoma
Hemochromatosis
Irritable Bowel Syndrome
Parkinson's Disease
Perspiration (excessive)
PMS (general)
Polyps
Rosacea
Skin (oily)
Abdominal Pain
Abscesses
Body Odor
Cancer Treatment (reducing side effects)
Fatigue
Gastritis
Gingivitis
Hair (loss or thinning)
Headache (general)
Hypertension
Inflammation
Influenza
Liver Detoxification
Memory and Brain Function
Oral Surgery
Psoriasis
Stress
Triglycerides (high)
Ulcers
Urinary Tract Infections
Wrinkles