Healthy people have beautiful pink nails. 2. The nails are pale and bloodless, suggesting anemia, blood cold, loss of qi and blood, and low blood pressure. 3. The nails are purple, suggesting insufficient blood supply and hypoxia, arteriosclerosis and hyperlipidemia (high cholesterol). For people who are close to death, their nails often turn black from the fingertips of the roots, grow into a straight line, and finally die. 5. Blue nails lack oxygen. Too green, too blue, blood stasis, or stagnation of heart qi are all malignant lesions of nails. 6. Blue nails are severe cold syndrome of blood stasis. Young and black are dying. 7. Yellow nails are jaundice, hepatobiliary diseases and smoking habits. It is a chronic disease, which appears on the thumb, suggesting that the whole body is in poor health. 8. White spots on nail bed indicate calcium deficiency, silicon deficiency or parasites in the body. Drug or nun poisoning also occurs in the day shift. People with white fingernails are prone to fatigue or chronic habitual constipation. The white shift of the middle finger suggests that the spine is calcium deficient and osteoporosis, which is prone to waist and leg diseases or fractures and should not be repaired. 1. standard nails Generally speaking, the lower part of a healthy person's nails is in a white crescent shape. It is best if all five fingers are crescent-shaped. If there is no moon on the thumb, it is worth noting. It is not good to have no moon shape. If the moon shape is too big, it means that you have heart system or spleen and stomach diseases. The best ideal is that the shape of the moon accounts for 1/5 of the whole nail. 2. The smoothness of nail surface in horizontal and vertical nail paths is a sign of health. However, some people have many prismatic stripes on their nails, indicating that there is something abnormal in their bodies, and diseases that are already sick or latent will break out. Some people have several prismatic vertical paths on their nails, which is also a sign of abnormal body. Such people are depressed, tired and weak, and generally suffer from nervous system weakness, brain system diseases and alcohol and drug poisoning. 3. There are depressions in the nail body, which are collectively referred to as depressions. It can be inferred that the patient was seriously ill or went into mental shock about a few days ago, leading to malnutrition. If the sulcus occurs in the thumb, it is mostly concave; If it happens on the index finger, people are prone to skin diseases; If it happens on the middle finger, it is mostly muscle weakness; If it happens on the ring finger, it is easy to get eye diseases, bronchitis, and other respiratory diseases; If it happens on the little finger, it is easy to suffer from pharyngitis, neuralgia or biliary tract diseases. 4. The nails are turned upside down, that is, the nails are turned up in the direction of the back of the hand, and people with sunken nails are prone to heart disease. This phenomenon is common in patients with spinal cord diseases or alcoholism. 5. Slender nails are slender, rectangular and convex in cross section. People with weak renal function are prone to reproductive and urinary diseases. People with long, rectangular and oval nails are prone to asthma, bronchitis and other diseases. At the same time, it is prone to flu and has weak body resistance. 6. Women with short nails and quadrangular nails are prone to gynecological diseases, thus affecting reproductive function. People with short nails and quadrangles have heart diseases. If the nails are blue, then you have cardiovascular neurosis. If they turn dark blue or purple, it means that the heart disease has worsened. 7. People with round nails and flat sections have asplenia. People with round nails and round cross-sections are physically weak. 8. There are parasites with missing nails in the human body. 9. People with triangular nails are prone to digestive diseases and laryngitis. The triangle shape is opposite to the former, and people with inverted triangles are prone to diabetes and pneumonia. The fan-shaped (inverted triangle) on the fingers of the drumstick will have diseases of heart, brain and blood circulation, such as stroke and spinal cord. 10. People with sunken nails are prone to tuberculosis. Nails are wide and short (wider than long), and both men and women may be infertile. Small nails, short nails and wide nails are red, indicating hypertension, cerebral thrombosis and cerebral congestion. The risk of atherosclerosis. Extremely small nails are a feature of heart disease patients. People with extra large nails and thin fingers are prone to get sick in the respiratory system. Thumb is a sign of health, serious illness and injury. After the operation, there is a horizontal groove on its nail. Changes in the five internal organs of the human body will also be reflected on the nails accordingly. As long as we pay attention to the subtle changes of nails, we can predict a person's health. If you look at health from nails, the key lies in the color and shape of nails. Healthy nails should be smooth and flat, with no vertical and horizontal grooves on the nail surface, no interference spots on the nail, symmetrical nails, no deviation, no depression or upturned ends. As far as normal nails are concerned, although there are many kinds, there are not exactly the same nails. Generally speaking, healthy nails can be divided into: ordinary nails, big nails, small nails, long nails, short nails, wide nails, narrow nails and so on. Usually, nails account for 3/5 of the fingers, arched in a rectangular shape, and the transverse diameter at the top is slightly larger than that at the base. The white half-moon part of the nail root is called nail half-moon, which is also commonly known as nail white in folk, just located in the center of each finger, and there is no big deviation. Speaking of it, when all fingernails have proper nail whitening, it can be inferred that human health is in good condition. If 10 fingernails are not or only a little white, it means that the body is exhausted or sick. The ideal nail polish should account for about 1/5 of the nail area. Too much or no nail polish doesn't mean you are strong. The growth and shape of nails will be affected by physical changes at any time. Especially from the color of nails, whether there is normal white nails, we can see whether I am healthy or sick. In addition, some clues can be seen from the following 10 different pathological nails. We should pay attention to this, adopt correct treatment methods and try to correct it as soon as possible. First, nail brittle crack must first find out its reasons: First, nails have been in contact with water for too long; Second, protein and calcium, sulfur, zinc and other elements or vitamins A, B and C in the diet are insufficient; Third, chronic diseases or emotional stress; Fourth, oral contraceptives; Fifth, polish nails or use abrasives. May wish to adopt the following correction methods respectively. 1. Take two tablespoons of yeast and 1000 mg of choline orally every day. It is best to add these nutrients to liquid or milk for oral administration, which will help improve the strength of nails. 2. In view of the fact that iron deficiency can lead to dry and fragile nails, it is best to eat more iron-rich foods and take vitamin C to improve the ability to absorb iron. 3. Soak and polish flawless nails with warm malt oil or other natural oil for about 5- 10 minutes every day, and then massage from fingertips to the cuticle on the surface. If the nail surface is slightly scratched by the sand board, grease can easily penetrate into it. Soak your fingers with vinegar diluent every night, which is a good way to prevent nails from cracking easily. Using white iodine above and below the nail tip can not only restore the elasticity and strength of the nail, but also hinder the nail from being cut off. Second, nails become fish, colorful. People with chronic diseases, long-term depression, smoking or finger contact with carbon paper, hair dye and other chemical pollutants can discolor or stain their nails. If the nails are deeply dyed, it's best to wait until the new nails grow. If you want to remove surface stains in time, you can rub your fingertips repeatedly with a piece of lemon, and then wash and dry. Third, the nails are grotesque. If you lack protein or iron for a long time, it is usually easy to cause spoon-shaped or flat nails, which can be corrected by improving diet and nutrition. It is said that wearing artificial nails can soften the water stored in nails and cause them to bend upwards. Therefore, it is necessary to appropriately increase nutrition and remove the artificial nails worn. Fourth, the nails are dull. If the nails are wavy and dull, it may indicate a lack of protein, vitamins A and B or minerals. This can improve the daily diet and supplement multivitamins every day. Add vitamin B6 and zinc 15g. The black and white nails indicate that you may have liver disease. At this time, you can ask a doctor to check and help you make a diagnosis. 5. Pale nails This may be a sign of lack of zinc and vitamin B6, or it may be caused by anemia. After improving diet and nutrition, the symptoms of pale nails still exist, so you should consult a doctor to find out the reason. Six, the dent on the nail. The symptoms of this disease show that the body lacks calcium, protein and sulfur. These nutrients can be obtained from eggs and garlic, and it is better to eat them often. Seven, ridge, ditch, ditch nails If you wear artificial nails or do not pay attention to the cuticle of the appearance, it may cause problems with ridges, bad nails and ditch nails. These abnormal signs may be caused by diseases and nutritional deficiencies, so symptomatic treatment is appropriate. Eight, linear raised nails This strange nail with a good appearance often appears after being in a bad mood or getting sick. If you can eat a proper diet rich in protein every day and take vitamin C plus 15 mg zinc supplement, you can accelerate the growth of new nails and make the horizontal raised linear nails gradually disappear. Nine, vertical groove nails Sometimes this kind of nail will appear after 40 years old. This is because the ability of cell regeneration is weakened. To this end, check at least once a year to see if there is anemia or lack of vitamins and minerals. The disease may indicate a lack of vitamin A, calcium or iron. Ten, the nails are soft and weak. This unhealthy nail is often caused by excessive contact with water or chemicals in nail cosmetics. Secondly, it is also related to bad mood and poor diet. Eat more sunflower seeds in daily life, increase the intake of vitamin A, and take 5000 mg dolomite orally every day. It is reported that this product can supplement calcium and magnesium, which can make the soft and brittle nails return to normal within 3 weeks and look brand-new.