Knowledge about drinking water Precautions for drinking water

　　Four common misunderstandings about drinking water

　　Misunderstanding 1:

　　Only drinking boiled water can effectively replenish water

　　In fact, any food containing water can replenish water. According to the "Dietary Guidelines for Residents" of the United States, adults female Adults should drink 2.7 liters of water per day male It's 3.7 liters. Compare China's dietary guidelines for residents, which require adults to drink at least 1.2 liters of water per day. At first glance, it seems that Americans drink much more water every day than China, but this is not the case. Nutritionists say that almost all foods contain water. The American Dietary Guidelines include all water in food, while the Chinese Dietary Guidelines only include water intake.

　　Whether it’s tea, coffee , juice or cola drinks, the water content of which exceeds 90%, can effectively replenish water. In China's dietary guidelines, the recommendation for drinking water is to "drink adequate amounts of water every day and choose beverages rationally." It does not blindly advocate plain water, but reminds people to choose different ways to replenish water according to their own living habits. For example, milk drinks and pure fruit juice drinks contain a certain amount of nutrients and can be consumed in moderation as a dietary supplement. Some drinks are added with certain minerals and vitamins and are suitable for outdoor activities on hot days and after exercise.

　　Misunderstanding 2:

　　Drink water only when you are thirsty

　　Regarding drinking water, most people only drink water when they are thirsty. In fact, this is a major misunderstanding about drinking water. In fact, 75% of the substances in the human body are water. Only when the body's water loss reaches 2% of its body weight will it feel thirsty. In other words: when you feel thirsty, your body is already in a state of chronic dehydration. Therefore, you should drink water scientifically, drink water regularly when you are not thirsty, and ensure that you drink enough water every day. You cannot only drink water when you feel thirsty.

　　At the same time, drink a glass of water when you wake up in the morning, and you can also drink more water in an air-conditioned room. Some elderly people are afraid to drink water because they are afraid of frequent urination. As a result, they do not drink enough water. This must be paid attention to.

　　There are more people who only emphasize the thirst-quenching effect of water and ignore the nutritional effect of water. A large number of nutrients required by our body can only participate in metabolism and be absorbed by the body through the dilution and circulation of water. In addition, long-term dehydration will increase the viscosity of the blood and induce nerve System and cardiovascular and cerebrovascular disease。