Distinguish between safe water and healthy water
First of all, we must know the kinds of water we drink. According to the physiological needs of human body, drinking water can be divided into two categories. One is safe water, which means that the water quality is safe, non-toxic to human body and can maintain the basic life requirements of human body. In layman's terms, it is called life-saving water.
The other is healthy water, which can improve the quality of human life and promote health after long-term drinking. Safe water is the premise of drinking water, but safe water is not equal to healthy water.
Never drink four kinds of water:
1, inseparable bladder cancer, rectal cancer
Studies have shown that drinking raw water increases the possibility of bladder cancer and rectal cancer by 2 1%-38%. When the water temperature reaches 100℃, these two harmful substances will be greatly reduced with the evaporation of steam. If boiling lasts for 3 minutes, it is safe to drink.
2, thousands of boiling water-diarrhea, abdominal distension, coma and convulsions
Thousands of boiling water is water that has been boiled on the stove for a night or a long time, and it is water that has been boiled repeatedly in an electric water heater. Because this kind of water takes a long time to boil, the content of heavy metals such as calcium and magnesium and nonvolatile substances such as nitrite in the water is high. Drinking this water for a long time will interfere with people's gastrointestinal function and cause temporary diarrhea and bloating; Toxic nitrite can also cause hypoxia in the body, which can lead to coma, convulsion and even death in severe cases.
3, boiler water-premature aging, cancer
Boiler water is leftover boiler water such as steamed bread, and the concentration of nitrite in the repeatedly used boiler water is very high. Drinking this water often, or cooking porridge with this water, will cause nitrite poisoning; Scale often enters the human body with water, and it can also cause digestive, neurological, urinary and hematopoietic diseases, and even cause premature aging and cancer.
4, water for the elderly-esophageal cancer, gastric cancer
Commonly known as "stagnant water", that is, water that cannot be stored for a long time. Drinking this kind of water often will obviously slow down cell metabolism and affect physical development for minors; Middle-aged and elderly people will accelerate the recession; The incidence of esophageal cancer and gastric cancer is increasing in many old places, which may be related to long-term drinking of aged water. Toxic substances in aging water also increase with the increase of water storage time.
Drink water as needed.
Traditional Chinese medicine does not advocate drinking water often and not being thirsty, but advocating meeting needs. Drinking too much water may harm the kidneys. People's age, physique, climate and geographical location will all affect the demand for water. For example, in cold winter, people naturally need less water. It is very hot in summer, so people need to drink more water. The amount of water you drink varies from person to person. Healthy people can judge whether there are signs such as dry mouth, dry stool and dark yellow urine. For example, the normal urine color should be light yellow. If the color is too dark, you should replenish water. If the color is too light, it means that you may have drunk too much water.
4 the best time to drink water
Drinking a glass of water after getting up in the morning can play a role in relaxing bowels;
After a nap, the body consumes more energy from lunch and is prone to fatigue.
Drinking a glass of water (preferably green tea) between 13:00- 15:00 can prevent drowsiness and reduce blood lipids; Drinking a glass of water before meals can flush the physiological toilet of the human body-clean the bladder, discharge nephrotoxicity, and prevent diseases such as gallstones and kidney calculi;
Drinking a glass of water before going to bed at night can nourish yin and prevent blood from thickening. This is the best time to drink water every day, and the rest can be supplemented as needed.