Natto cannot be eaten with pig blood, walnuts, or yogurt, because natto is a soybean. If eaten with yogurt, it will affect the body's absorption of calcium. If eaten with pig blood, walnuts, it will Causes bloating, abdominal pain and indigestion. Natto is a good thing. It is rich in nattokinase and has a two-way thrombolytic effect. You can eat more of it every day, but the taste is a bit smelly. Not everyone can accept it. If you want to supplement the nutrition of natto, you can eat Subenin Natto Red. Qu capsule.