Relationship: Cataracts and quercetin

Evidence supporting the use of: Quercetin
For the health condition: Cataracts

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Synopsis

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

Quercetin, a flavonoid found in many fruits and vegetables, has been investigated for its antioxidant properties, which may be relevant to the prevention or treatment of cataracts. Cataracts develop in part due to oxidative stress-induced damage to the lens proteins, leading to cloudiness and loss of vision. Several preclinical studies (primarily in animal models and in vitro lens cultures) have demonstrated that quercetin can scavenge free radicals, reduce lipid peroxidation, and protect lens epithelial cells from oxidative damage. For instance, studies in diabetic rats have shown that quercetin administration can delay cataract formation, likely via its antioxidant action and possible modulation of the polyol pathway (a contributor to diabetic cataractogenesis).

However, the evidence in humans is very limited. There are no large-scale randomized controlled trials directly evaluating quercetin supplementation for cataract prevention or treatment in people. Some epidemiological studies suggest that diets high in flavonoids (including quercetin) are associated with a lower risk of cataracts, but these do not isolate the effect of quercetin per se. Therefore, while the rationale for using quercetin is scientifically plausible and supported by preclinical research, clinical validation is currently lacking. The evidence supporting its use is modest (rated 2/5), and more robust human studies are needed before quercetin can be recommended as a treatment for cataracts.

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Other health conditions supported by quercetin

Aging (prevention)
Allergies (food)
Allergies (respiratory)
Alzheimer's Disease
Arteriosclerosis
Arthritis
Asthma
Autoimmune Disorders
Bladder (ulcerated)
Blood Clots (prevention of)
Bruises (healing)
Cancer (natural therapy for)
Cancer (prevention)
Capillary Weakness
Cardiovascular Disease
Cartilage Damage
Cataracts
Chemotherapy (reducing side effects)
Cholesterol (high)
Chronic Obstructive Pulmonary Disorder
Circulation (poor)
Circulation (to the brain)
Cirrhosis of the Liver
Cold Sores
Colds (antiviral)
Colds (decongestant)
Colds (general)
Colds (prevention)
Colds (with fever)
Colitis
Congestion
Congestion (bronchial)
Congestion (lungs)
Congestion (sinus)
Conjunctivitis
Contagious Diseases
Cough (damp)
Crohn's Disease
Cystic Fibrosis
Cytomealovirus
Dementia
Depression
Dermatitis
Diabetes
Diabetic Retinopathy
Edema
Fatigue
Free Radical Damage
Gastritis
Gingivitis
Hair (loss or thinning)
Hypertension
Inflammation
Influenza
Irritable Bowel Syndrome
Liver Detoxification
Lupus
Memory and Brain Function
Multiple Sclerosis
Osteoporosis
Parkinson's Disease
Peripheral Neuropathy
Prostatitis
Psoriasis
Rhinitis
Rhinitis, Allergic
Sinus Infection
Skin (infections)
Sneezing
Triglycerides (high)
Ulcers

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Evidence supporting the use of: Quercetin
For the health condition: Cataracts

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Synopsis

Other ingredients used for Cataracts

Other health conditions supported by quercetin

Products containing quercetin

Health Concerns

Brands

Evidence supporting the use of: QuercetinFor the health condition: Cataracts

Table of Contents

Synopsis

Other ingredients used for Cataracts

Other health conditions supported by quercetin

Products containing quercetin

Evidence supporting the use of: Quercetin
For the health condition: Cataracts