In many Asian households, Houttuynia cordata, commonly known as fish mint or “diếp cá,” is a familiar herb used for its cooling and detoxifying properties. Most people only use its leaves for salads, juices, or traditional remedies. However, few realize that the root of Houttuynia is an equally powerful, nutrient-rich part of the plant that offers remarkable health benefits. Instead of discarding it, this “hidden treasure” deserves a place in your daily diet and wellness routine.

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1. The Science Behind Houttuynia Root’s Healing Power

According to both modern research and traditional medicine, Houttuynia cordata contains beneficial compounds such as vitamin K, lipids, laurinaldehyde, capric acid, and decanoic acid, which provide antibacterial and anti-inflammatory effects. Recent studies from the University of Science and Technology of China have discovered that the root extract contains microRNA (miRNA) that helps inhibit RNA viruses that cause respiratory infections.

This makes Houttuynia root a valuable natural remedy for protecting the respiratory system and supporting overall immune function.

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2. Health Benefits of Houttuynia Root

• Supports Respiratory Health:
  Traditional medicine uses Houttuynia root to soothe coughs, clear phlegm, and fight viral infections. Its antibacterial and antiviral properties help prevent common respiratory illnesses.

• Reduces Inflammation:
  Compounds found in the root inhibit inflammatory cytokines and pathways, helping to control chronic inflammation and support faster recovery from infections or wounds.

• Boosts Immunity and Antioxidant Defense:
  The root is rich in antioxidants that neutralize free radicals, protecting cells from damage and enhancing the body’s natural defense system.

• Detoxifies and Improves Circulation:
  In traditional Eastern medicine, Houttuynia root is believed to “clear heat,” promote urination, improve blood flow, and remove toxins — making it a great aid for skin health and digestion.

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3. Easy and Delicious Ways to Use Houttuynia Root

a. Houttuynia Root Juice
Rinse about 50 grams of fresh roots thoroughly, blend with water, and strain the liquid. Add a bit of honey or rock sugar and a few drops of lemon juice to balance the earthy flavor. Drink immediately to preserve nutrients.

b. Houttuynia Root Salad
Combine 100 grams of sliced roots with shredded carrots, cucumber, and onion. Mix with salt, sugar, sesame oil, and rice vinegar. Let it sit for 10 minutes to absorb flavors — a refreshing, detoxifying salad perfect for summer.

c. Stir-Fried Houttuynia Root with Garlic
Sauté chopped garlic in a bit of oil, add 200 grams of cleaned Houttuynia roots, and stir-fry with salt and seasoning for 5 minutes. This quick dish keeps the roots’ crunchy texture while delivering their full nutritional value.

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4. Why You Shouldn’t Throw Away the Roots

While most people focus only on the leaves, the roots actually contain stronger medicinal properties. In traditional Eastern medicine, they are said to enter the lung, liver, and spleen meridians, promoting detoxification and energy balance.

So next time you prepare fish mint, don’t discard the roots — they might just be the most valuable part of the plant.

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Conclusion: A Forgotten Superfood Beneath the Soil

The root of Houttuynia cordata is truly an herbal gem. Packed with antioxidants, anti-inflammatory agents, and immune-boosting compounds, it provides a natural way to protect your health and balance your body. By including Houttuynia roots in your meals or drinks, you can rediscover an ancient remedy that modern science is only beginning to appreciate.