How Nattokinase Supports Lung Health and Circulation (Not Just Your Heart)

Introduction: It’s Not Just About the Heart

When most people hear “nattokinase,” they think of cardiovascular support—and for good reason. This potent enzyme, derived from the traditional Japanese fermented food natto, is well-documented for helping reduce blood clots, improve circulation, and maintain heart health.

But your circulatory system doesn’t stop at your heart.

Your lungs rely on healthy blood flow too. In fact, poor pulmonary circulation can lead to shortness of breath, reduced stamina, and even serious respiratory issues. This is where nattokinase truly shines as an all-around circulation enhancer, including benefits for your lungs, oxygenation, and more.

What Is Nattokinase?

Nattokinase is an enzyme extracted from Bacillus subtilis during the fermentation of soybeans into natto. It’s been studied for its fibrinolytic activity—its ability to break down fibrin, a protein involved in clot formation.

It’s unique among natural supplements for its dual action:

• Breaks down existing clots and fibrin buildup

• Helps regulate blood flow through veins and arteries

This fibrin-degrading ability is what links nattokinase not only to heart wellness but also to respiratory and pulmonary support.

How Nattokinase Supports Lung Health

1. Improves Pulmonary Circulation

Just like the heart, the lungs rely on consistent blood flow. Pulmonary circulation is responsible for transporting deoxygenated blood from the heart to the lungs and back again.

Studies suggest that nattokinase can:

• Reduce blood viscosity

• Improve flow to small capillaries in the lungs

• Decrease pressure in the pulmonary arteries (important for people with pulmonary hypertension)

➡️ This means better oxygen exchange and less strain on lung tissues.

✅ A 2009 study in Hypertension Research found that nattokinase helped reduce blood pressure in hypertensive patients, which indirectly supports lung circulation by easing the load on pulmonary vessels.
(Kim et al., 2009)

2. Breaks Down Fibrin in Lung Tissue

Chronic respiratory issues like COPD, asthma, and pulmonary fibrosis often involve the buildup of fibrin in lung tissues. This restricts airflow and impairs oxygenation.

Because nattokinase breaks down fibrin, researchers are exploring its role in:

• Reducing scarring in the lungs

• Improving airflow and flexibility in lung tissues

• Supporting natural repair mechanisms after infections or inflammation

🔬 In vitro studies have shown that nattokinase can break down abnormal fibrin without affecting necessary clotting—making it ideal for long-term wellness.
(Sumi et al., 1987; Fujita et al., 1995)

3. Reduces Risk of Pulmonary Embolism and Clotting

For older adults or sedentary individuals, blood clots that travel to the lungs (pulmonary embolisms) are a serious concern. Nattokinase's fibrinolytic effects help prevent excessive clot formation by:

• Keeping blood thin and moving

• Reducing clot risk without the side effects of pharmaceuticals like warfarin

⚠️ Note: Always speak with your doctor if you are on blood thinners.

4. Supports Respiratory Wellness During Infections

Nattokinase has been researched as part of support protocols for lung infections, particularly viral respiratory illnesses that increase the risk of microclots and fibrin buildup.

Some studies during the COVID-19 pandemic explored nattokinase for:

• Reducing clotting complications

• Easing long COVID respiratory symptoms

• Supporting lung regeneration after inflammation

5. Increases Blood Oxygenation and Energy

Poor lung function often leads to fatigue because your body isn’t getting enough oxygen. By improving circulation to and from the lungs, nattokinase indirectly:

• Enhances oxygen transport

• Supports better brain and muscle energy

• Boosts endurance and mental clarity

This makes nattokinase a valuable tool for:

• Aging adults

• Runners and active individuals

• People recovering from respiratory illness

Why Choose Crane Wellness Nattokinase Blend?

Not all nattokinase supplements are created equal. Here’s what makes Crane Wellness Nattokinase Blend stand out:

✅ Potent dose of 6,000 FU (fibrinolytic units) per sachet
✅ Formulated in Japan by scientists and traditional health experts
✅ Includes GABA for stress reduction, Garlic Extract for additional cardiovascular support, and Okinawa Moromi Vinegar for antioxidant-rich metabolic health
✅ Powder format for quick absorption and better bioavailability
✅ Free from fillers, dyes, or synthetic additives

Recommended Dosage for Respiratory & Circulatory Support

Most research supports nattokinase in the range of 2,000–6,000 FU daily, taken on an empty stomach for best absorption.

Crane Wellness Blend = 6,000 FU per sachet
→ Start with 1 per day and consult your provider if you’re on any medications.

Additional Lifestyle Tips for Lung Health & Circulation

While nattokinase is powerful, lifestyle also plays a huge role. Consider adding these to your wellness routine:

🧘♀️ Deep breathing & meditation – improves oxygen use
🚶 Movement & walking – prevents stagnation & clots
🥬 Anti-inflammatory foods – leafy greens, berries, turmeric
🚫 Avoid smoking & air pollutants – protect lung tissue
💧 Hydration – supports blood flow and detoxification
🌲 Forest bathing (shinrin-yoku) – reduces inflammation and improves lung function

The Bottom Line

Nattokinase isn’t just a heart health supplement—it’s a whole-body circulatory support hero, especially for the lungs. From reducing fibrin in lung tissue to enhancing oxygenation and reducing clot risk, its benefits are too important to ignore.

If you’re looking to breathe easier, feel more energized, and support your long-term health, Crane Wellness Nattokinase Blend is a safe, science-backed, and effective choice.

🔗 Ready to support your lung and circulation health?

Shop Crane Wellness Nattokinase Blend here
Subscribe & save up to 20% — plus get a free gift on your first order! 🌿

References:

1. Sumi H, Hamada H, Nakanishi K, Hiratani H. (1987). A novel fibrinolytic enzyme (nattokinase) in the vegetable cheese natto; a typical and popular soybean food in the Japanese diet. Experientia.

2. Fujita M, Hong K, Ito Y, et al. (1995). Transport of nattokinase across the rat intestinal tract. Biol Pharm Bull.

3. Kim JY, Gum SN, Paik JK, et al. (2009). Nattokinase decreases blood pressure in hypertensive patients. Hypertens Res.