Boiling water can kill bacteria and remove substances harmful to human body, because tap water is chlorinated, and chlorine interacts with residual organic substances in water to form toxic carcinogenic compounds such as halogenated hydrocarbons and chloroform. When the water temperature reaches 90℃, the content of halogenated hydrocarbons rises to 19 1 μ g/L, and chloroform rises to 177 μ g/L, both exceeding the national standard by two times. When the water temperature just reached 100℃, the contents of halogenated hydrocarbons and chloroform were 1 10 μ g/L and 99 μ g/L, respectively. If boiling is continued for 3 minutes, these two substances will rapidly drop to 9.2 micrograms and 8.3 micrograms per liter respectively, reaching the drinking standard. So it is best to boil the water for about 3 minutes.
In order to save water, some people often reheat the leftover boiling water, which is a bad habit. Because repeated boiling water will cause water aging, it will not only lose minerals beneficial to human body, but also produce some harmful substances such as nitrite. Once nitrite enters the human body in large quantities, it can make the red blood cells in the blood lose their oxygen-carrying function and lead to tissue hypoxia. People who drink this water for a long time will have symptoms such as nausea, vomiting, headache, purple nails and lips, and palpitation. It may even cause hypoxia and even induce cancer.
A cold drink after getting up in the morning is good for your health. Many people like to dry a cup of boiled water the night before and drink it the next morning. This practice is possible in the case of low temperature; For example, in summer, when the temperature exceeds 30 degrees Celsius, the air humidity is high, and bacteria multiply rapidly, cold boiled water will lose its biological activity overnight, which is easy to be polluted and cause diarrhea. You can pour half a cup of boiling water the night before, then cover it and drink it with warm water the next morning.
In addition, don't leave cold boiled water for too long. It is best to drink boiled water on the same day. It is best not to drink cold boiled water for more than 3 days.
Question 2: How many degrees of boiling water can I drink? We should drink more boiled water when we are exercising vigorously and have a fever, because we need to drink more boiled water to supplement when we have a fever. In addition, drinking plenty of water can dilute the toxins produced by bacteria or viruses and excrete them through urine. Water can also regulate body temperature. Is fever harmful to human body? When germs invade the human body, the tissues of the body are destroyed, and some substances are produced, which are transmitted to the "inferior colliculus" through the blood, ordering the body to generate heat and accelerate metabolism to fight against pathogens. It will also produce much higher white blood cells and antibodies than usual to fight and destroy germs.
Question 3: What is the temperature of hot water that can be drunk? What is the appropriate drinking water temperature?
37 ~ 45 degrees Celsius.
There are only three answers to this question: some like to drink cold water, some like normal temperature, and some like hot water.
For a simple example, if cold glass is poured with hot water or hot glass is poured with ice water, the consequences are easy to imagine. Most glass will break. If it doesn't break, it will at least produce many tiny cracks inside the glass.
It is not advisable to drink low-temperature water in hot summer and high-temperature water in winter. The temperature of the intestines and stomach is relatively higher than the body surface, and the temperature of the intestines and stomach will change accordingly with the change of the external environment temperature. Therefore, once you drink water that is too cold or too hot, it will eliminate the feeling of hot summer or cold, and it will be relieved temporarily, but over time, its harm to the stomach will be obvious. Water between 37 ~ 45 degrees Celsius is more suitable. Whether it is cold glass or hot glass, if it is poured with warm water, it will not cause any damage to the glass. Second, the temperature difference is enough for the glass to slowly return to normal temperature.
Many friends like to drink warm water mixed with cold water and hot water in the water dispenser, which is the worst drinking habit. Although both are warm water, this "warm water" is not what we just said. If it is boiled water cooled to the same temperature, then all the water molecules in it move at the same temperature at a uniform speed. The water molecules in this water are identical and will not have adverse reactions to the human body after drinking. However, if "warm water" with the same temperature is mixed with cold water and boiled water, although it is the same water temperature, this mixed water contains two kinds of water molecules, one is cold water molecules with low temperature and slow movement, and the other is hot water molecules with high temperature and fast movement. In a period of time, these two completely different water molecules will exist in this water with the same water temperature, which is only the average temperature of two different types of water molecules. This kind of water is called "Yin-Yang water" in Chinese medicine, that is, water mixed with cold and heat. If this kind of water is drunk for a long time, it will lead to imbalance between yin and yang, and many diseases will also occur accordingly.
Question 4: How cold is the boiled water? Everyone has different heat resistance, but it is best to cool the boiling water below 40℃ before drinking.
Question 5: How many degrees of boiling water do people usually drink? Do not exceed 60 degrees Celsius. If people often drink water around 60 degrees Celsius, it will destroy esophageal mucosa and mucosal hyperplasia and induce esophageal cancer. The best temperature for drinking water, eating and gargling is 35 ~ 38℃, and the temperature for the mouth and teeth is the smallest.
Doctors recommend drinking warm water, the best water temperature 18~45 degrees Celsius. Overheated water will not only damage enamel, but also strongly damage the mucosa of throat, digestive tract and stomach.
Question 6: How high is the boiling water to drink? Boiling water is 100 degrees Celsius at standard atmospheric pressure. Cook it. The purpose of cooking is sterilization.
When you need to take it directly orally, the water temperature generally needs to drop to 60 to 30 degrees.
The closer to the body temperature, the easier it is for water to be absorbed by the human body.
Too hot water will directly burn human cells. Too cold can also have a * * * effect on human cells.
Question 7: How high is the boiling water to drink? It is best to drink after boiling water. On the one hand, it is to disinfect and kill harmful microorganisms in raw water; On the other hand, because the city tap water is chlorinated, chlorine interacts with the residual organic matter in the water, which will produce toxic carcinogenic compounds such as halogenated hydrocarbons and chloroform. After boiling for a proper time, the contents of halogenated hydrocarbons and chloroform will be minimized and become safe drinking water. However, the longer the boiling water is boiled, the better, because the longer the boiling time is, the less volatile harmful substances and nitrite in the water will be concentrated because of the evaporation of water, and the content will be higher. Drinking such water is also harmful to your health. Making soup is the same as boiling water. It doesn't take too long and it doesn't need to be too thick.
Question 8: What is the boiling water temperature? The most suitable boiling water for drinking more water is 100 degree. Generally, the water temperature is 60-80 degrees, but if you drink tap water, I suggest you boil it and cool it to 60-80 degrees. Water that can be drunk directly can be drunk when it is directly burned to 6-80 degrees. The mountain spring water I drink is ok. Taobao can find it.
Question 9: How much boiled water do you drink when you have a cold? It is best not to say that you have a cold, but to drink boiled water with high temperature. The key is to drink more water than usual during a cold.
Because: most people have a cold and fever, the activities of various enzymes in the body change, and metabolism cannot be carried out normally. Drinking more water can dilute metabolites and help eliminate toxins.
It is best to use warm water of 40℃~50℃ for a cold, because overheating will burn the esophagus.
Drinking too hot water will damage the oral cavity and esophageal mucosa, and long-term drinking will easily lead to oral cancer and esophageal cancer.