First, the use of tea is popular with people, not only because it is a popular good drink, but also because it can play a certain role in health care and treatment. As Su Shi, a poet in the Song Dynasty, said, "Di Wei doesn't have to take a pill in Lutong and use seven bowls of tea." Jin Lu is a scholar who loves tea. Su Shi thinks that drinking tea often is better than taking medicine. This is also the case. There are many records about drinking tea and keeping in good health in the historical materials when tea was opened. These records describe the utility of tea wonderfully, and even some ancient famous doctors have expounded it in their works. Modern biochemical and medical research has proved that the chemical composition of tea contains more than 450 organic compounds and no less than 15 inorganic mineral nutrients. It can be seen that tea has both nutritional value and pharmacological effect on human body, which is closely related to human health. Of course, although tea has health care and pharmacological effects on human body, it can't fully play the role of treatment and fitness because of its limited content, which should also be seen. Second, the medicinal value of green tea tea green tea has the function of stimulating the central nervous system and invigorating the spirit. Whenever people are sleepy, sleepy, listless and blocked, drinking a cup of tea can make people feel refreshed, fresh-minded and open-minded. Therefore, in Hua Tuo's "On Food" in the Three Kingdoms period, there is "bitter tea for a long time, good thinking and meaning". Shennong Materia Medica records that "tea tastes bitter, which makes people think well and sleep less". Tea also has the functions of digestion, diuresis, thirst quenching, disinfection and hangover relieving, and intellectual fit and eyesight improving. Compendium of Materia Medica explains that alcohol and food are toxic, greasy and burning ... Drinking more and reducing fat can best remove oil. Su Dongpo, a writer in Song Dynasty, likes drinking tea very much. He said with deep feelings: "People can't live without tea for a day." . Rinse your mouth with tea every time after a meal, and when you are bored, you will clear yourself. If there is meat between your teeth, you will get tea shrinkage; A thirsty person, if he takes a few sips of tea, will feel that his tongue is sweet, and he will not be thirsty. Although the jade liquid is sweet, it is difficult to compare with it. Its functions of relieving hangover, treating dysentery and disinfecting external sores are recorded in Zhi Zhi Wen Lun and Ben Cao Tong Yuan. Whenever people feel bored and depressed after eating greasy food, I advise you that a cup of strong tea, greasy and clean, will suddenly refresh your chest and abdomen. In addition, tea has many benefits, such as treating common cold, cough, diuresis, improving eyesight, reducing fire and fixing teeth. Third, refresh thinking and improve work efficiency. In life, you may have such an experience: in the dead of winter, when you sit at your desk and feel dizzy and tired, you will definitely feel refreshed and exhausted. The sun is scorching and the wind is cold. When you are running around for a long time, sweating and exhausted, drinking a pot of fragrant tea will make you feel refreshed and refreshed. This is the effect of tea to refresh, benefit thinking and eliminate fatigue. Therefore, some writers, poets and scientists generally need strong tea to help them write. Drivers who drive at night often have to drink a cup of strong tea before leaving, so as to concentrate and ensure driving safety. People who work in the field for a long time often drink some strong tea, which also helps to prevent bacterial infection and protect their health. Tea can refresh the mind and relieve fatigue. This is because the caffeine content in tea is relatively high, accounting for about 40% of the total amount of finished tea. After caffeine is absorbed by human body, it can not only stimulate the central nervous system, clear the mind and help thinking, but also accelerate blood circulation, activate bones and muscles and relieve fatigue. Clinically, it is effective in treating colds and headaches without side effects. At the same time, caffeine can also dilate blood vessels and relax coronary arteries, and can also be used as an auxiliary drug for the treatment of angina pectoris and myocardial infarction. Fourth, quench thirst and promote fluid production, digestion and boredom. When you are thirsty in midsummer, if you can drink a cup of green tea, you will feel full of body fluid and cool all over. This is because the chemical components in tea soup (such as polyphenols, sugars, pectin, amino acids, etc.) react with saliva in the mouth, which makes the mouth moist and produces a cool feeling. In addition, caffeine controls the body temperature center from the inside, regulates the body temperature, stimulates the kidneys and promotes excretion, so that a large amount of heat and dirt in the body can be eliminated and metabolized to achieve a new physiological balance. Tea contains iodine and fluorine, iodine has the function of preventing and treating hyperthyroidism, and fluorine is the component of human bones, teeth, hair and nails. And in our diet, the content of fluorine is also very low. Drinking more tea in this way will supplement the deficiency of body nutrition, especially improve the acid resistance of teeth. Tea is also an oral hygiene agent. After getting up every day, I often feel thirsty and bitter. At this time, if you can drink a cup of green tea, you can remove the mucus in your mouth, eliminate bad breath and stimulate your appetite. There is a proverb in our country: "A cup of tea in the morning will starve the drug seller to death." It shows that drinking morning tea is good for physical and mental health. It makes sense that some places in the south still have the habit of drinking morning tea. In life, people often need to drink several cups of strong tea after a big meal, which can prevent greasy accumulation. This is because caffeine can excite the central nervous system, promote the secretion of gastric juice and the digestion of food, and promote the digestion of fat. In addition, the aromatic substances in tea also have the functions of dissolving the fat in bath, helping digestion and eliminating the fishy smell in mouth. The aromatic substances can also give people a feeling of excitement and pleasure, increase the secretion of gastric juice and promote the consumption of protein and fat. Five, sterilization, anti-inflammatory, diuretic detoxification polyphenols in tea, protein can be solidified and precipitated. Tea polyphenols combined with unicellular bacteria can coagulate protein and kill bacteria. Such as cholera, typhoid fever and Escherichia coli, are seriously harmful. Most of them will lose their vitality if they are soaked in strong tea for a few minutes. Therefore, people in China often use strong tea to treat bacillary dysentery, or apply it to the wound to relieve inflammation and detoxify and promote wound healing. At present, Chinese patent medicines made of tea for treating dysentery and colds are also effective. As the saying goes, drinking is often "the beginning of ceremony and the end of chaos", while drinking tea in person can be "the beginning of ceremony and the end of ceremony". Tea can also sober up and quit smoking. When people drink too much, because alcohol poisons the nervous system, people will feel weak, even sick and vomiting, and lose their minds. At this time, if you drink several cups of strong tea, you will use polyphenols and caffeine in tea to neutralize alcohol, so that the toxic substances of alcohol can be excreted in time through urine, thus detoxifying and sobering up. Nicotine in tobacco is a toxic alkaloid. People smoke continuously, and nicotine enters the human body with the smoke. When the content reaches a certain level, poisoning phenomena occur: dizziness, brain swelling and general malaise. At this time, if you drink strong tea, you can rely on the anti-production effect of tea caffeine to get rid of it. In life, some people often drink tea while smoking, which is not easy to cause poisoning. In recent years, some people have done experiments and tea has the effect of quitting smoking. At present, the smoking cessation tea and candy on the market are all made of tea as the main raw material and through special processes. According to modern chemical analysis, tea contains a variety of vitamins, mainly vitamin A, vitamin b 1, vitamin b2, nicotinic acid, pantothenic acid, vitamin C, etc. These trace vitamins are indispensable nutrients for human body. For example, vitamin C is not only a substance that the human body can't synthesize naturally, but also a necessary component to generate connective tissue. It can maintain the normal physiological functions of teeth, bones, blood vessels and muscles and promote wound healing. If the human body lacks vitamin C, it will suffer from scurvy, or gum bleeding, capillary fragility, subcutaneous bleeding and so on. According to relevant historical records, drinking tea is enough to prevent diseases caused by insufficient or cut-off vitamin C food supply in wars and navigation. In tea, green tea contains more vitamins. Every 100g of fresh tea contains about 180mg of vitamins, which is equivalent to lemon and spinach. Vitamin D and vitamin C have an important synergistic effect, which can help the body absorb vitamin C and reduce the occurrence of cerebral hemorrhage. Tea polyphenols in tea polyphenols also have the function of vitamin D, which can enhance the elasticity of blood vessels and the permeability of blood vessel walls, and prevent arteriosclerosis and stroke. Pantothenic acid has the effect of moistening skin. There is more vitamin K (chlorophyll) in black tea, which can be compared with fish and spinach. If you drink five cups of black tea every day, you can completely meet the human body's demand for vitamin K. Therefore, drinking tea regularly can provide a variety of vitamins for the human body to a certain extent, which is conducive to fitness and disease prevention. In addition, tea contains a variety of minerals, especially trace elements that are rare in other foods, such as copper, fluorine, magnesium, molybdenum and aluminum. At this time, the human body has certain nutritional value and pharmacological effects. Although the content of copper and iron is not much, it has a certain effect on preventing and treating anemia because of its blood-generating function. Seven, lose weight and build a strong body, strengthen the heart and prevent diseases In recent years, some places are conducting research on the prevention and treatment of cancer with tea. Studies have shown that a substance in tea can inhibit cancer cells in the human body through blood circulation and play a preventive role. This needs further study. Although tea has all the above functions, it will also affect your health if you drink it improperly or drink too much strong tea. We must attach great importance to this point, otherwise it will be counterproductive. Eight, drinking tea "four taboos" is conducive to health. Drinking tea is very particular. This is because drinking tea has advantages and disadvantages, and the gains and losses depend on whether it is reasonable or not. Tea must be ready at once. In the long history of China people drinking tea for thousands of years, a set of scientific tea drinking methods has been summarized. The so-called reasonable drinking tea is to give full play to the beneficial effects of drinking tea on the human body and avoid its disadvantages. Drinking tea varies with mental and physical labor, physical strength, working conditions and tea. Drinking tea should not only meet the needs of the body, but also study the brewing method. Now drink it. Since ancient times, people have been used to using teapot cups, first brewing in the teapot and then pouring them into the cups for drinking. The ancients called it tea. Nowadays, many people are used to drinking tea directly from cups, whether for themselves or for guests, which is very unreasonable. Familiar guests can sit and chat for a while, and they can drink more: if they are unfamiliar, they will waste tea by taking a sip or not. Second, the chemical composition has changed, and trace elements have been leached, which not only worsens the color and flavor, but also accumulates unhealthy substances (such as zinc, copper, chromium, welfare, etc. ) exceeding the hygienic standard is harmful to people's health. At present, there is a saying in society that drinking overnight tea will cause cancer, which is unfounded. Although some people can say a thing or two, it is difficult to draw a conclusion. Nevertheless, it is better not to drink overnight tea. This is because, when the temperature is suitable, especially in summer, due to the role of vitamins, tea soup has changed color, even turned sour and turned dark brown. From a health point of view, such tea is not hygienic enough. Drink tea in moderation. It is beyond reproach that drinking tea is good for health. But there is always a limit to everything. Without the limit of degree, things tend to develop in the opposite direction. The same is true for drinking tea. Drinking tea is good for health, not to say that the more tea you drink, the better. Traditional Chinese medicine research has proved that according to different constitutions, people with weak spleen and stomach should not drink tea, while those with strong spleen and stomach should drink tea. This is because drinking tea can stimulate the central nervous system. Tea contains caffeine. If it accumulates too much in the human body and exceeds the hygienic standard, it will be poisoned and damage the nervous system. This is why drinking tea is easy to lose sleep. In severe cases, it will also lead to mental decline and reduced thinking ability. Generally speaking, it is better for each person to use 5 ~ 10g of tea every day and soak it for three times, which can be increased in summer. At the same time, tea must not be used before or after taking the medicine. Try to drink less tea. Drink tea at the right time. One of the functions of tea is to help digestion. Drinking tea on an empty stomach and before meals is not suitable, which will dilute gastric acid and hinder digestion. It is best to drink tea 20 minutes after meals. Because, 20 minutes after a meal, when gastric acid digestion food is not perfect, drinking tea not only helps digestion, but also stimulates gastric acid to continue to secrete and digest. In this way, drinking tea can help digestion Tea also has the function of relieving fatigue, especially in fatigue, which can restore people's thinking ability and promote blood circulation. In this way, people should not drink tea before going to bed, especially strong tea, otherwise it will cause insomnia. Because within four or five hours of drinking strong tea, tea will still have an effect on the human body. If the above answers are helpful to you, please accept them.