Nails are a barometer of health, normal nails, red, arc, smooth and shiny, nail root of the nail half moon is grayish white. You said “crescent” scientific name nail half-moon, healthy people nail half-moon size moderate, nail half-moon smaller or disappeared people generally digestive function is poor, the body is relatively weak, easy to fatigue. From Chinese medicine, a person’s fingernails on the crescent moon if the arc is large, glossy good, it shows that the person’s blood is more abundant; if the crescent moon becomes smaller or gradually disappear, indicating that the human body’s blood decline, physical condition is not as good as before. Chinese medicine does have a record of white crescent moon can be judged by the human heart function is good, Chinese medicine that the liver blood, blood circulation will directly affect the function of the heart, and the liver its Hua concentrated in the human nails. Generally speaking, people with white crescent moon heart qi enough, blood circulation is relatively smooth; white crescent moon is relatively small or not at all, heart qi to be weaker, blood circulation may not be very good. The liver opens the orifices to the eyes, the main tendons, its Hua in the claws. This means that the liver’s blood can affect the vitality of the claws and nails. These crescents, commonly known as “little suns”, are called “half-moon marks”. They appear in the lower 1/5 of the nail, reflecting the lack of energy and vitality. It is the window of health. Yuan Qi: moisten the five viscera and six bowels, promote the normal functioning of the five viscera and six bowels, is to resist external evil, longevity and anti-aging substances, genetic material. As the saying goes: the essence of the person strong enough, essence of the weak people sick, essence of the old people, essence of the people is the truth. First, the normal half-moon mark: 1, the number: 8-10 hands (the less energy the worse, the colder the body); 2, state: nail 1/5; 3, color: milky white, the whiter the better. Second, for the fingernails on the white crescent can be seen what disease: nail lower half-moon if very large, is that the blood circulation is fast. If it is small, the blood circulation is not good, to the extreme anemia, the half-moon will disappear completely. A person with short nails has a weak heart and is susceptible to infections from the abdomen to the waist and lower body. If the tip of the nail is flat and embedded in the flesh, it may be prone to neuralgia, rheumatism and other diseases. People with narrow nails in the lower part of the nail are susceptible to diseases of the spine and other bones, especially those with very soft nails, which are always deficient in calcium. People with shell-shaped nails should pay more attention to spinal cord and nervous system problems. Too many white spots on the nails are a sign of neurasthenia, and yellow dots indicate digestive disorders. Nails on the small particles of drug poisoning or internal parasites. Straight lines on the nails are evidence of overwork and overuse of the brain. Horizontal lines on the nails is a dangerous pathology at the beginning, the horizontal line is only exposed at the bottom of the nails, with the growth of the nails, and gradually move upward, the people who are good at this, according to the location of the horizontal line, deduce the possible period of the disease. 1. Healthy people’s nails are pink in color. Put ten nails under the sunlight observation, finger up and down movement, such as the surface of the nails have shining reflection, it shows that the overall health is in an excellent state, the function of the body organs are intact and normal; 2, the surface of the nails appear brown longitudinal stripes or longitudinal cracks, from the tip of the fingertip to the root of the fingernail extension, it shows that suffer from intestinal inflammatory lesions or predicted that vitamin deficiencies and iron deficiency and other diseases. Partial whitening of the nails indicates zinc deficiency. General whitening indicates anemia. The appearance of brownish-yellow stripes on the nails is a sign of liver disease. However, it is worth noting that this brownish-yellow stripes to appear in ten fingernails at the same time, is liver disease; alone can not be used as a basis for diagnosis; 3, the nails if there are many thimble-like pits sunken, most likely psoriasis advanced disease performance; 4, finger swelling, purple halo on the nails, is likely to be a lung disease. Nails become thin and brittle, or even cracked, showing that the respiratory system and circulatory system have diseases; 5, the middle of the nails sunken, shaped like a spoon, showing that has suffered from diabetes, anemia, hyperthyroidism or malnutrition, etc.; 6, nails below the dark red-purple blood spots, often said to be suffering from purple epilepsy, blood diseases. Nail breaks: 1. blackened nails, crushed spots under the nails indicate infection-induced (serious heart infections) myocarditis, other heart diseases, bleeding disorders; 2. brittle nails indicate iron deficiency, thyroid problems, impaired renal function, circulation problems; 3. brittle, soft nails are easy to wear down and lack of nutrients, which may indicate hyperthyroidism; 4. black nails and / or thin, flat, Black nails and/or thin, flat, spoon-shaped nails are signs of vitamin B12 deficiency or anemia. (Nails may also turn black or gray if hands are exposed to detergents or allergens); 5. Dark blue nails indicate lung obstruction, such as asthma or emphysema; 6. Sunken fingernail tips indicate heart, liver or respiratory problems; 7. Green nails may indicate bacterial infections in the body, in addition to localized fungal infections; 8. Semi-white nails with black dots on the tips of the nails may indicate kidney disease; 9. Isolated green stripes on the nail beds, especially on the spoons of lighter skinned people, may indicate hyperthyroidism. The presence of isolated green stripes on the nail bed, especially when the spoon is lighter in color, is a criterion for skin cancer; 10, beaded nails (uneven surface) is a sign of rheumatoid arthritis; 11, nails extended to the fingertips and curved downward is a sign of lung damage, such as emphysema, asbestosis; 12, easy to break, cracked, flaking, indicating malnutrition and a lack of hydrochloric acid and protein. Mineral deficiencies are also extreme at this time; 13, the base of the nail is raised, and the white part is very small, which means that there are respiratory diseases, such as emphysema or chronic bronchitis. This symptom has the possibility of heredity; 14, nails and nail bed separation implies thyroid disease or limited infection; 15, nails like being knocked flat brass instruments, indicating that there is a tendency to lose part or all of the hair; 16, reddish-brown acne scars and fingertip abrasion, forked, implies psoriasis; need to supplement the VC, folic acid, protein; 17, reddening of the skin around the nail bed implies essential fatty acid indigestion or connective tissue diseases, such as lupus, and the skin around the nail bed is also extremely deficient. Reddening of the skin around the nail bed means poor digestion of essential fatty acids or connective tissue diseases such as lupus; 18. Upright or horizontal ridges appear on the nails. Upright ridges indicate poor health, malabsorption of nutrients, and/or iron deficiency, kidney disease. Horizontal ridges are caused by excessive mental or physical stress. Interlocking ridges indicate a tendency to develop arthritis; 19. Thick nails imply low circulatory system, poor circulation, and thyroid disorders; 20. Thinning of the nails may be indicative of lichen planus; 21. Two fixed white stripes imply hypoproteinemia; 22. Wide square nails imply endocrine abnormalities; 23. White lines indicate possible heart disease, high fever, and arsenic poisoning; 24, A horizontal white stripe on the fingernail indicates possible liver disease; 25. If the white half-moon shaped area at the root of the finger turns red, it indicates a heart problem, and if it turns grayish green, it indicates heavy metal poisoning or lung disease; 26. White fingernails imply liver or kidney disease, or anemia; 27. White fingernails accompanied by pinkish red color near the fingertips is a sign of cirrhosis of the liver; 28. Yellow fingernails appearing before the appearance of other symptoms can indicate certain internal diseases such as lymphatic, respiratory, and other disorders. diseases, such as lymphatic, respiratory lesions, diabetes, liver disease. Of course, nothing is absolute and should be viewed in a scientific and factual manner.