06/06/2026
Natto may be one of the most powerful foods for both your heart and bones. This traditional Japanese food — made from **fermented soybeans** — creates a unique enzyme called **nattokinase** during fermentation. Research suggests nattokinase may help break down **fibrin**, a protein involved in blood clot formation, and regular natto consumption has been associated with improvements in blood flow and arterial health markers.
But **natto** does something most foods cannot. It is the **richest dietary source of Vitamin K2 (MK-7)** — a nutrient that activates proteins responsible for directing calcium into bones and teeth while helping reduce calcium buildup inside arteries and soft tissues. In simple terms: the same food that may support healthy circulation may also support stronger bones.
Large Japanese studies have linked higher Vitamin K2 intake with better long-term bone health and lower fracture risk. In Japan, people commonly eat **natto** with rice, eggs, or vegetables as a small daily serving. **One food. Two powerful functions: circulation and bone support.**
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