Why do nails grow fast and slow?
Why do nails grow fast and slow? I believe that everyone may always pay attention to the growth of their nails in their lives. When they grow up, they will be cut off. You may find that some nails grow at different speeds, so why do nails grow fast and slow? Next, let me look at the relevant content.
Why do nails grow fast and slow 1?
Nails and toenails come from the outermost keratinized epithelium of human skin. These epithelia are very dense and form strong nails. Their main ingredient is a kind of protein called keratin.
Nails grow hard because of high calcium content? The answer is no, it is found that the calcium content in nails is very low, accounting for only about 0. 1% of its weight. In fact, it is the high sulfhydryl protein in nail keratin that determines their hardness. In addition, the moisture content of nails is less than that of skin, which is also a reason for its greater hardness. Strong nails protect the skin under the nails.
Nails grow every day. Interestingly, the growth rate of different parts of nails is different. The nails of the right hand grow faster than those of the left hand; Toenails grow slower than fingernails, and the growth rate is about 1/3 ~ 1/2 of fingernails. The nails of the same hand grow at different rates. Generally, the longer the finger, the faster the nail grows. The order from fast to slow is middle finger, index finger, ring finger, thumb and little finger.
The growth rate of nails is related to temperature. When the temperature is high in summer, they grow faster. When nutrition is good, nails will grow faster; When people are healthy and happy, the local blood flow of nails increases, providing more nutrition. At this time, nails not only grow fast, but also appear smooth and shiny.
The growth rate of nails is also related to people's age. The child is in the growth and development stage, so the nails grow faster, and the baby's nails grow about 0.7 mm per week.
Why do nails grow fast and slow? 2
Adult weekly length1-1.4 mm. Too fast or too slow can be a disease. Some people say that people have long hair and long nails. Although there is no exact basis for this statement, the growth rate of nails is really different within one year. In addition, Chinese medicine believes that claws are not only tendons, but also symptoms of liver and gallbladder, so everyone's nail growth rate is not exactly the same, which is closely related to people's health.
Factors affecting the growth rate of nails
It is generally believed that the growth rate of nails is not only different from person to person, but also influenced by age, climate, day and night cycle, menstruation, nutrition, gender and other factors.
1. Age
Baby's nails grow about 0.7 mm per week, and the growth rate will increase with age. In adulthood, their nails can grow 65,438+0-65,438+0.4 mm per week, but most people will slow down after 30 years old.
It is generally believed that the growth rate of nails is not only different from person to person, but also influenced by age, climate, day and night cycle, menstruation, nutrition, gender and other factors.
2. Weather
At different times of year and day, the growth rate of nails is different. Generally, nails grow fastest in summer and slowest in winter. Nails grow fastest in the morning and slowest at night. Women's nails grow faster before menstruation and during pregnancy.
Frequent friction
Frequent rubbing can also accelerate the growth of nails, so people who are used to using their right hands grow their nails faster than their left hands, and their fingernails grow 3-4 times faster than their toenails. The growth rate of each nail is not exactly the same. Usually the longer the fingers, the faster the nails grow. For example, the index finger, middle finger and ring finger grow faster than the nails of thumb and little finger.
4. Nutrition
Malnutrition or taking certain drugs may also affect the growth rate of nails. Good nutrition can make nails grow normally. If you are malnourished or have anorexia nervosa, your nails will grow slowly and there will be some lateral grooves called Bo's line.
be in cheerful mood
The growth rate of nails is also related to people's mood. When people are in a happy mood, their nails will look smooth and shiny. This is because physical and mental pleasure can promote blood circulation, increase local blood flow and provide more nutrition for nails.
6. illness
Whether the rapid growth of nails is related to leisure is still inconclusive, but it has been found that the growth rate of nails is closely related to some pathological changes in the human body. For example, when suffering from hyperthyroidism, congenital heart disease, Parkinson's disease and pregnancy diseases, the growth of nails will generally accelerate, while when suffering from hypothyroidism, renal insufficiency, diabetes, malnutrition and other diseases, the growth of nails will slow down.
For the growth of nails, in fact, the most important thing to pay attention to is timely pruning. Because long nails are like a dustpan that only hides evil and practices evil, there are many unknown sources of infection here. Whether you scratch your teeth, pick your ears or pick your nose with long nails, you will bring all kinds of germs and viruses into your body and cause diseases. Remember, only by cutting your nails often can you get rid of the disease.
I feel uncomfortable when my nails grow out.
Psychological function, maybe the tiger looks uncomfortable with nails, but if you feel uneasy, will you have obsessive-compulsive disorder?
The inexplicable pain in the thumb
Thumb pain, first of all, it is necessary to know whether there is trauma, which may lead to thumb fracture, local soft tissue injury and even joint dislocation, and it is necessary to actively improve the examination. If there are indications for surgery, active surgical treatment is needed. If there is no trauma, there is thumb pain, which may be tenosynovitis of the thumb. If the thumb is used for a long time or overworked, the tendon will repeatedly enter and exit the tendon sheath, thus forming local congestion and edema, forming aseptic inflammation and causing thumb pain. Local suppurative infection of thumb will cause local soft tissue injury. If pus is formed, the local internal environment will change, and it will also cause severe local pain. Rheumatoid arthritis, rheumatoid arthritis and gouty arthritis will all cause damage to the articular cartilage and synovium of the thumb, and also cause thumb pain.
How to judge your health by looking at your nails
Ways to see health from nails
Healthy nails should be smooth, rosy, shiny, moderately thick, symmetrical, not skewed, tough and not brittle. There are no vertical and horizontal grooves on the nail surface, the half-moon shape at the root of the nail is gray, and the shape of the nail is normally curved. Failure to meet any of the above standards may indicate that there is something wrong with your body.
So, how should we judge specifically? Pi Xianming said, if you want to infer your physical condition from the crescent moon, you must first know what a healthy crescent moon looks like. Generally, the crescent on the fingernail should account for about 1/5 of the fingernail, and more than four fingers in 10 should have crescent, with clear edges.
Chinese medicine believes that if the crescent radian on a person's nails is appropriate and shiny, it means that this person is full of qi and blood; If the crescent moon becomes smaller or gradually disappears, it means that the human body's qi and blood are declining, the blood circulation is not good, and the physical condition is not as good as before. Especially when there are obvious changes suddenly, or abnormal performance for a long time, we should pay special attention to it.
Those people whose new moon is too small or too big say that they have some physical abnormalities or diseases. Too many people say that they are often in a state of anxiety and tension, which is more common among mental workers; Patients with gastrointestinal ulcer should be careful of gastric ulcer; Patients with cardiovascular diseases should be alert to cerebral hemorrhage.
Because the development of crescent moon is influenced by nutrition, environment, physical quality and other aspects, according to the principle of "essence is not enough to supplement taste" in traditional Chinese medicine, high-quality protein, such as milk, eggs, beans and fish, can be supplemented. And black food, such as black rice, black fungus and some seed foods, and increase exercise appropriately.
People whose fingernail crescent is too small or disappears generally have poor digestive function, relatively weak body and are prone to fatigue. If they have gastrointestinal diseases, they should beware of duodenal ulcer. Of course, the determination of the disease needs to be combined with other symptoms and medical examination, and finally the doctor makes a diagnosis.
How to see health through nails
Through the phenomenon of blood gas morphology and nail color changes of ten fingers, as well as related diseases of internal organs and tissues, this paper contacts and discusses the characteristics of nail diagnosis diseases.
For example, when a person's viscera and organs are diseased, blood gas will be reflected in a certain position of the nail with different symbols, and the degree of the lesion, that is, the severity of the disease, will be expressed in different colors. That is, when a certain part of the nail has a specific blood gas symbol and color shape, it can be predicted that a certain viscera organ in the body is diseased. This is one of the important methods of disease self-examination.
Histology of nail diagnosis nails are divided into two parts: deck and nail bed. The deck is a horny plate covering the back of fingers, which is slightly quadrangular. Its length, short, wide and narrow are basically the same as fingertips. The straight part of the finger end of deck accessories is called nail bed.
The nail bed is closely connected with the deck, and there are many capillaries in the nail bed, which are quite rich. At the same time, the nail bed also runs through various meridians, so the growth of the deck is based on the blood supply of the nail bed.
The deck is divided into distal end and nail root, the former is the free front edge of the deck; The latter is the part of the rear edge of the deck hidden deep in the skin. Except the free distal part, the skin around the other three sides of the deck is ridged, which is called nail fold, and the groove between nail fold and nail bed is called nail groove.
The inside of the deck is called radial side and the outside is called ulnar side. The two sides meet in the nail fold. There is a white half-moon area near the nail root on the deck, which is called arc shadow, also known as nail half-moon, health circle, safety circle and so on. The color of the arc shadow depends on the thickness of the cell layer. When I was old, the capillary network in the nail bed was almost completely impermeable, so it was white. The nail bed below the nail root is particularly thick, which is called the nail bottom. Its cells proliferate actively, and the growth of nails depends on the growth of methyl.
Nail diagnosis method
1, nailing method
Generally speaking, it is customary to divide nails into four quadrants, that is, from its proximal end to its distal end and from its radial side to its ulnar side, into four squares, which are called proximal radius, distal radius, proximal ulna and distal ulna respectively, and then divide each square into four small squares in the same way, which can also be called quadrants I, II, III and IV respectively.
2, blood gas symbol
The sign of blood gas refers to the position, color and appearance of R blood gas on nails. In addition, blood gas symbols usually reflect some pathological changes and pathological changes of viscera and organs according to certain forms and laws, which is the basis for diagnosing diseases through nails.
Step 3 identify colors
If the nails are pale, it often indicates anemia or malnutrition. You can eat more Chinese dates, black sesame seeds and other foods to replenish qi and blood. If the nails are dark yellow, it may be a harbinger of hepatobiliary diseases or other chronic diseases, and further examination is needed to confirm the diagnosis; Blue nails suggest cold syndrome, or blood stasis and hypoxia.
Step 4 identify spots
White spots on nails are mostly due to indigestion, moth-eaten or calcium deficiency in children. Pay attention to food hygiene and balanced nutrition in peacetime; Red spots appear under the nails, indicating that there is bleeding in the capillaries; Black spots appear, indicating that blood circulation is disturbed, and there may be tumors and gangrene. It is recommended to go to the hospital for further examination and treatment.
Step 5 recognize lines
Generally, vertical stripes appear on nails, which are mostly caused by fatigue, neurasthenia, low immunity or other chronic diseases. Pay attention to rest at ordinary times; Transverse groove, usually malnutrition or chronic digestive system diseases.
6, identify the half moon mark
The "crescent moon" at the root of the nail, also known as the half moon mark, can also reflect the health of the body's qi and blood. Healthy people, the half-moon mark is moderate in size and gray; If there is no half-moon mark, it is mostly a manifestation of insufficient blood; If the half-moon mark is too large, it is easy to suffer from diseases such as hypertension and hyperthyroidism.
A happy mood contributes to good health.
We often say that a smile is ten years old, and this proverb also shows that a happy mood is good for your health. What are the benefits of a happy mood for health care?
First, it can enhance memory.
We often find that some explosive and grumpy people have poor memories and often forget what they did at the last second. Because it is explosive and impatient, it will exert certain pressure on the heart and brain, thus oppressing the development of nerves and reducing memory. And a happy mood will lead to an increase in the number of protein of a certain memory in the brain, which is also closely related to Alzheimer's disease. Therefore, if the elderly maintain a happy mood, it will reduce the risk of Alzheimer's disease and make their memory better.
Second, it can promote health.
Many people who love to be angry will suffer from cardiovascular and cerebrovascular diseases, because when they are angry, the hormones in the human body will rise wildly, the heart will beat faster, the blood will come out like a brain, and their faces will be red and their minds will be hazy. People who are in a happy mood will keep their internal organs in a peaceful environment and their blood flow is stable, which also means that they are in good health. Therefore, maintaining a happy mood can make the body healthier and reduce the chances of suffering from certain cardiovascular diseases. We also often say that people with a good attitude can live longer. I hope he can face some things calmly, don't be too anxious, and won't lose sleep because of anxiety.
Third, summary.
Happiness can also keep the endocrine balance of the body, make the muscles of the body in a relaxed state, thus eliminating some harmful sense of urgency. And a happy attitude can make people stay calm, not explosive and impatient when facing things, so that their hearts are in an urgent state. Therefore, a happy attitude is beneficial to health. We should cultivate ourselves, be calm in the face of things and not be too impatient.