What water can't be drunk!

Reference: (1) Thousands of boiling water and boiler water are harmful to health. "Thousands of boiling water" refers to the water that has been boiled for a long time on the stove and boiled repeatedly in the electric water heater when drinking tea. The boiling time of "thousand boiling water" is too long, and the content of nonvolatile substances such as calcium, magnesium and other metal components and nitrite in the water is high. Long-term drinking of "thousands of boiling water" will interfere with people's gastrointestinal function, leading to temporary diarrhea and bloating. Toxic nitrite can also cause hypoxia in the body, which can lead to coma and even death in severe cases. In addition, after water is boiled repeatedly, minerals easily absorbed by the human body become precipitated particles that are difficult to be absorbed by the human body, and the nutritional value of water is lost. (2) Aged water cannot be drunk. The longer the stagnant water is stored, the more toxic it is, which will obviously reduce the cell metabolism of minors and affect their growth and development. Accelerate the aging of middle-aged and elderly people and have a high incidence of cancer. (3) Hard water cannot be drunk. The hardness of water refers to the mineral content dissolved in water. The more minerals such as calcium and magnesium in water, the greater the hardness of water. Drinking water with good quality will affect the digestion and absorption function of gastrointestinal tract and cause indigestion or diarrhea. Long-term drinking will increase the incidence of visceral stones. (4) Medical water cannot be used as drinking water. At present, there are some drinking water named "electrolytic water" and "oxygen-rich water" on the market. Strictly speaking, these are all medical water, which can not be used as drinking water for normal people, nor is it suitable for drinking in large quantities as domestic drinking water. (5) Distilled water does not advocate drinking distilled water. Distilled water is soft water with too few or no minerals. (6) Drinking pure water is not recommended. Experts believe that the biggest disadvantage of pure water is that it removes essential minerals and trace elements such as calcium, magnesium, fluorine, iodine and selenium. Some data show that the intake of calcium and magnesium in drinking water accounts for 5%-20% of the total intake, and the lack of this intake may affect the normal education of teenagers. Pure water has a strong ability to dissolve various trace elements, compounds and nutrients. After drinking a lot, some substances necessary for human body will be dissolved in water quickly and excreted, and the contents of minerals and trace elements in human body will be unbalanced, which will lead to diseases for a long time. Up to now, scientists have realized that 15 kinds of trace elements are essential to human body, some of which exist in water, such as selenium, which plays an important role in the function of heart and liver. (7) The biggest problem of pure water is that it contains no minerals, but the PH value is acidic. Once a person's constitution tends to be acidic, the function of cells will deteriorate, and the functions of various organs and tissues of the body will also weaken; Slow metabolism, waste is not easy to discharge; The burden on the kidneys and liver will increase, which will lead to the formation of chronic diseases. Pure water mainly refers to distilled water and space water. In the production process, on the one hand, bacteria, organic matter and some toxic elements harmful to people are removed; On the other hand, it also removes trace elements and minerals beneficial to human body. Long-term drinking will lead to malnutrition, decreased immunity, and make people suffer from general weakness, collapse, syncope, muscle trembling and other diseases. Pure water cannot enter the cell membrane. By NMR measurement, the half-width of water mass of distilled water and purified water is much larger than that of high-quality mineral water. However, this kind of water cannot directly enter the cells through the cell membrane, and it cannot be expected that this kind of water can transport the nutrients needed by the human body into the cells. Therefore, drinking pure water for a long time will affect the absorption and utilization of nutrients and their deposition in the body, and accelerate the loss of nutrients. (8) Drinking raw water, such as river water, stream water, well water, reservoir water and tap water, contains various bacteria, microorganisms and parasites harmful to human body. Drinking this raw water can easily lead to acute gastroenteritis, viral hepatitis, typhoid fever, dysentery and parasitic infection. (9) Repeated heating of bottled water will cause cancer (10). Drinks are not equal to drinking water. Drinking water can cause chronic benzene poisoning (1 1). Antimony in bottled mineral water may be harmful to health. Plastic bottles may continue to dissolve the chemical element "antimony" into mineral water, which will be potentially fatal to human health for a long time. A very small amount of antimony will not make people sick, but a large amount will induce strong vomiting and even death. (12) After the tap water of the health killer stopped overnight, the tap water in the faucet and nearby water pipes was still, and the microorganisms remaining in the water would multiply in large numbers. So it is not suitable for drinking, and it is not suitable for brushing your teeth and gargling. You can put a washbasin of water before you use it.