Originally derived from natto, a traditional Japanese fermented soybean food, nattokinase is a naturally occurring enzyme that has been studied for its effects on the body's fibrin balance and overall circulatory health. While research is still evolving, current findings have made nattokinase one of the more intriguing ingredients in the cardiovascular supplement category.
Here's what the science says about how nattokinase may support cardiovascular health.
What Is Nattokinase?
Nattokinase is a naturally occurring enzyme derived from natto, a fermented soybean dish consumed in Japan for centuries. During fermentation, the bacterium Bacillus subtilis produces nattokinase, an enzyme that breaks down proteins.
Unlike many plant compounds valued for their antioxidant content, nattokinase stands out for its enzymatic activity. Researchers have been particularly interested in its interaction with fibrin, a structural protein involved in normal blood clot formation.
Because of this unique characteristic, nattokinase has become one of the most widely researched enzymes for cardiovascular support.
Supports Healthy Fibrin Balance
One of nattokinase's most well-studied actions is its ability to help maintain healthy fibrin levels.
Fibrin is essential for wound healing and normal clot formation. However, the body also relies on a natural process called fibrinolysis to break down fibrin once it is no longer needed. As we age, this balance can become less efficient.
Research suggests nattokinase may help support the body's natural fibrinolytic activity , maintaining healthy circulation and vascular function. This unique mechanism is one reason nattokinase has attracted interest from clinicians and supplement users focused on cardiovascular aging.
May Promote Healthy Blood Flow
Healthy circulation requires blood to flow efficiently throughout the body. Better circulation supports the efficient delivery of oxygen and nutrients throughout the body, contributing to overall cardiovascular wellness.
Studies suggest Nattokinase may help support normal blood flow by assisting the body's natural processes involved in maintaining healthy blood viscosity and vascular function. Many people incorporate it into broader heart health routines alongside exercise, balanced nutrition, and other evidence-based lifestyle habits.
Who May Consider Nattokinase?
Nattokinase supplements are commonly used by adults seeking to proactively support cardiovascular health, particularly those interested in healthy aging.
Individuals may consider nattokinase if they:
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Want to support healthy circulation
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Are focused on maintaining cardiovascular health over time
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Already follow a heart-conscious lifestyle
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Prefer evidence-informed supplements backed by emerging research
Because nattokinase can influence normal blood clotting pathways, it is not appropriate for everyone. Individuals taking anticoagulant or antiplatelet medications, those with bleeding disorders, or anyone preparing for surgery should consult their healthcare provider before use.
Sources:
Research Progress of Nattokinase in Reducing Blood Lipid | MDPI
Nattokinase: A Promising Alternative in Prevention and Treatment of Cardiovascular Diseases | PMC
