Editorial Committee of Health House; Chen (China health care expert); Guy Guo Zhong (M.D.) Nails-Small details indicate big problems. Long-term clinical observation shows that the changes of human viscera and organs will be reflected on nails accordingly. As long as you always pay attention to the subtle changes in your nails, you can explore health. There are similarities and differences in the diseases reflected by the fingernails of both hands, and there are certain rules. Generally speaking, the thumbnail reflects the head and neck lesions; The index finger nail reflects the lesions below the head and above the diaphragm (including upper lesions, chest, heart and lungs, etc.). ); The middle nail reflects the lesions from the diaphragm to the umbilicus (including middle jiao, liver, gallbladder, spleen, stomach, etc. ); The nameless nail reflects the lesions from below the umbilicus to above the second yin (including the lower coke, kidney, bladder, intestine, etc. ); Small nails reflect the lesions below the second yin (including lower jiao, second yin, legs, etc. Therefore, if there are lesions on different nails, we should pay attention to the corresponding body parts. The type and diagnosis of nails are based on the fact that the length of normal nails accounts for about 3/5 of the phalanx of the distal phalanx of fingers, and they are arched in a rectangular shape, with the transverse diameter at the top slightly larger than that at the base. As far as normal nails are concerned, they can be generally divided into: ordinary nails, big nails, small nails, long nails, short nails, wide nails, narrow nails and so on. According to the diagnosis of healthy nails, there are two main points: First, observe the color and shape of nails. Healthy nails should be pink, smooth and flat, with no vertical and horizontal grooves on the nail surface, no abnormal spots on the nail, symmetrical nails, no deviation, no depression or upturned ends. If the color and shape of nails change, it means that the body is changing. Secondly, observe the white part at the bottom of the nail, which is called "crescent arc", which is also commonly known as "moonlight". The crescent arc is located in the center of each finger without much deviation. When all nails have normal crescent arcs, it can be inferred that human health is good; If there is no or only a little crescent arc on the nail, it means that the body is exhausted or sick. The ideal crescent arc should occupy about 1/5 of the nail area. The crescent arc is too big or not, indicating that the body is sick. In addition, the abnormal change of crescent arc color may also reflect the unhealthy condition of the body. Chinese medicine sees nails. Traditional Chinese medicine believes that nails are the external glory of viscera and qi (referring to abundant qi and blood), which is directly related to the viscera and meridians of the human body and can fully reflect the physiological and pathological changes of the human body. The shape, size, color, luster, lines and spots of nails can reflect a person's basic health status, even its potential health crisis, and the pathological changes that are quietly taking place in the body. Unhealthy nail state color: gray, crimson, purple, black, moonlight less than or greater than 1/5 state: dark color, many vertical lines, dark and uneven color, many horizontal lines. Different nails correspond to different parts of the human body, and the nails of both hands have a certain correspondence with human parts. According to this correspondence, the health status of the corresponding parts of the body can be diagnosed. Nine regions and ten regions and nine regions and ten regions refer to dividing nails into ten regions, corresponding to different organs of the human body respectively, so as to achieve the purpose of understanding the health status of the body. 1, 3 lung, 2 heart, 4 and 6 hepatobiliary pancreas, 5 spleen and stomach, 7 and 9 small intestine, 8 large intestine, kidney, bladder 10 uterus, sperm room and bone. The diagnosis of nails mainly lies in observing the color, shape and moonlight of nails, and judging whether the body is in a healthy state by comparing the conditions of healthy nails.