Traditional Chinese medicine believes that kidney stores essence, essence produces marrow, and essence can transform blood. Kidney is the foundation of nature and the root of life. Only when the essence is sufficient can the kidney play its innate role. Therefore, health care must pay attention to nourishing bone marrow. As Huangdi Neijing said: "Bone marrow is solid, and qi and blood are derived from it. If so, the internal and external elements are harmonious, and evil can not be harmed. Eyes and ears are smart, and the blood is unchanged. " The importance of human bone marrow in life activities is clearly explained here. Bian Que, an imperial doctor, once said: "Your illness has now reached the bone marrow, and it is terminally ill, and ministers and doctors can't help it." . This means that the disease has damaged the bone marrow and cannot be cured.

Bone marrow: soft and blood-rich tissue, distributed in the medullary cavity of long bone shaft and between trabeculae of all cancellous bones, composed of various types of cells and reticular connective tissue.

Modern medical research has proved that the aging speed of people mainly depends on the degradation speed of bone marrow, and the inactivation and decline of bone marrow is the autumn when people are aging and disease-prone. When people are young, their bone marrow is bright red and full of vitality. However, due to pollution, diet, lifestyle, personality, drug abuse and other factors, the activity of bone marrow began to weaken after the age of 25, and gradually deteriorated, from the original bright red to light yellow. After the age of 45, the aging speed of various organs of the body is obviously accelerated, and the bone marrow begins to decline due to the decrease of activity, and the body immunity is obviously reduced, and the incidence of various diseases rises linearly. After the age of 75, the bone marrow has weathered and withered, and the immune level of the body has also dropped to the lowest level. At this time, the human mortality rate is the highest.