Natto was originally a popular and widespread food in Japan, and in recent years many people have claimed that natto has the effect of lowering blood lipids and dissolving blood clots. In fact, natto is a product obtained by fermenting soybeans after they have been cooked. If you say that eating natto is beneficial, it is similar to eating other fermented soy products, and it does not have the effect of dissolving blood clots and lowering blood lipids. As for the extract of natto, its efficacy is seriously exaggerated. The so-called benign effect of nattokinase on certain diseases is only reflected in a few animal experiments, and it is still far from whether it really works in people, and more data is needed to confirm it. Therefore, people with bad blood vessels and high blood lipids should not take natto as a lifesaver to avoid delaying treatment.