Water is an important substance that is survive, indispensable, people can be free of breath but not water in one day, but not all water can drink, the following five water will form nitrite to some extent. And other toxic and hazardous substances will have a certain harm to the human body, so it is necessary to attract people's attention.
First, aging water: commonly known as "dead water", that is, the water that does not move for a long time. I often drink this kind of water. For minors, the cell metabolism will slow down, affecting the growth and development of the body; the middle-aged and elderly people will accelerate the aging; many local esophageal cancer, gastric cancer increasing increasing, according to medical scientists It may be related to long-term drinking aging water. The relevant information indicates that the toxic substance in aging water has increased as the water storage time increases.
Second, thousand rolling water: The thousand rolling water is boiling overnight or long-time water, and there is also a water in the electric water heater. This water is cooled for too long, and there is no volatile substance in water, such as calcium, magnesium and other heavy metal components and nitrite content. Drinking this water, it will interfere with the gastrointestinal function of the person, temporary diarrhea, bloating; toxic nitrite will also cause hypoxia in the body, severe people will comltus, and even die.
Third, steamed pot water: steamer water is the steamed steamed pan water, especially after repeatedly used steam water, nitrite concentration is high. Always drink this kind of water, or use this kind of water, it will cause nitrite poisoning; the scale often enters the human body, which will cause digestion, nerve, urinary and hematopoietic system, and even causing premature age.
Fourth, the water does not open: people drinking tap water is treated with chlorinated sterilization. 13 harmful substances can be isolated in chlorine treatment, of which halogenated hydrocarbons, chloroform also have carcinogenic, teratogenic effects. When the water temperature reaches 90 ° C, the halogenated hydrocarbon content increased from 177 μg per kilogram, exceeding 2 times the national drinking water hygiene standard. Experts pointed out that drinking unboiled water, there is an increase in bladder cancer, and the possibility of rectal cancer increases by 21% to 38%. When the water temperature reaches 100 ° C, the two harmful substances are greatly reduced as the vapor is evaporated, and if it continues to boil for 3 minutes, drink safety.
5. Re-cooked water: Some people are used to refilling the remaining warm water in the hot water bottle and then drinking, the purpose is to save water, coal (gas), and season. But this "savings" is not enough. Because water is burned and burned, the moisture will be evaporated again, and the nitrite will rise, often drink this water, nitrite will accumulate in the body, causing poisoning
