Quercetin

February 4, 2025
Published
Last updated
February 4, 2025
Graham's Key takeaways
  1. Quercetin is a flavonoid with antioxidant and anti-inflammatory properties that support immune function, heart health, and cellular protection.
  2. The best sources of quercetin include apples, onions, berries, citrus fruits, green tea, and leafy greens.

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Quercetin is a plant-based flavonoid found in many fruits, vegetables, and herbs. Known for its antioxidant, anti-inflammatory, and immune-boosting properties, quercetin has gained attention for its potential role in reducing the risk of chronic diseases and supporting overall health. Research suggests quercetin could enhance immune function, improve heart health, and protect against inflammation-related conditions.

What is Quercetin?

Quercetin belongs to a group of plant compounds called flavonoids, known for their antioxidant properties. Flavonoids help neutralise free radicals, reducing oxidative stress and inflammation in the body.

Since quercetin is not produced by the body, it must be obtained through dietary sources or supplements.

Health benefits of Quercetin

  1. Boosts Immune Function
    • Quercetin enhances the body’s natural defence system by supporting immune cell activity and reducing inflammation. It has also been studied for its antiviral properties.
  2. Reduces Inflammation
    • Chronic inflammation is linked to conditions like arthritis, heart disease, and diabetes. Quercetin acts as a natural anti-inflammatory, helping to reduce symptoms of inflammatory disorders.
  3. Supports Heart Health
    • Quercetin may help lower blood pressure, improve circulation, and reduce LDL (bad) cholesterol, all of which contribute to better cardiovascular health.
  4. Acts as a Powerful Antioxidant
    • As an antioxidant, quercetin protects cells from oxidative damage, which can lead to ageing and chronic diseases.
  5. May Help with Allergies
    • Quercetin has natural antihistamine properties, potentially helping to reduce allergy symptoms like sneezing, itching, and congestion.
  6. Supports Brain Health
    • Studies suggest quercetin may protect against neurodegenerative diseases by reducing oxidative stress and inflammation in the brain.

Best Dietary Sources of Quercetin

Quercetin is found in a variety of plant-based foods, including:

Eating a variety of these foods regularly ensures a steady intake of quercetin and other beneficial flavonoids.

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How to Incorporate More Quercetin into Your Diet

  1. Eat More Fresh Fruits and Vegetables – Add apples, onions, and berries to your meals.
  2. Drink Green Tea – A great source of quercetin and other antioxidants.
  3. Use Herbs and Spices – Add fresh or dried into your meals.
  4. Choose Whole Foods Over Processed Foods – Flavonoids are highest in fresh, unprocessed produce.
  5. Consider Quercetin Supplements – Available in capsule or powder form for those needing higher doses.
Conclusion

Quercetin is a powerful flavonoid with numerous health benefits, including immune support, anti-inflammatory effects, heart health, and antioxidant protection. By consuming a diet rich in fruits, vegetables, tea, and herbs, you can naturally boost your quercetin intake and support long-term wellness.

If you’re looking to strengthen your immunity, reduce inflammation, or improve heart health, incorporating more quercetin-rich foods into your diet is a simple and effective step toward better health.

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Related Terms

  1. Flavonoids – A group of plant compounds with antioxidant properties, including quercetin.
  2. Oxidative Stress – Cellular damage caused by free radicals, linked to ageing and disease.
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