Drinking water (on)

Source: Health News

Shanghai Jiaotong University School of Medicine Affiliated Ruijin Hospital Clinical Nutrition Wang Ye Cao Weixin

      Question 1: a wide range of drinking water, from the mineral water, pure water, distilled water to supplement the body of various nutritional ingredients of the special drinks, as well as home water boiled water, in the end what kind of good?

      For the average family, the direct drinking water can boil water, and convenient, economic, quality is also better. If the economic conditions permit, you can choose the appropriate natural mineral water. The pure water and distilled water due to the lack of human minerals and trace elements, not long-term drinking, especially pregnant women, children and the elderly. As for the various energy drinks, how much contain heat and some additives and preservatives, should be as little as possible to drink.

      Question two: cooking, do soup with pure water is good?

      Common household cooking water is used tap water, but there may be secondary pollution and residual chlorine pipeline problems. Thus, many families to pure water instead of tap water to cook, that this is more clean and safe. But pure water in the production process, both to remove some of the harmful bacteria, organic matter and other impurities, but also remove the beneficial human health of trace elements and minerals, and a lot of food will lead to the loss of the original body of these nutrients. In addition, some of the trace elements in the water is indispensable to human health and food can not be completely replaced. Therefore, do not advocate cooking with pure water, do soup. We can boil water and then cooking, conditions permit, you can also consider the use of natural mineral water.

      Question 3: Why is drinking water long-term heating is not good?

      If your home is drinking tap water or bottled water, in order to prevent secondary pollution, you can consider boiling water and then drink. However, if the boiled water is repeatedly heated, it will cause a lot of loss of nutrients in the water, and the emergence of some heavy metal ions deposition and the formation of nitrite substances. The latter into the body in the stomach, the role of food will also produce carcinogenic nitrosamines. Therefore, drinking water can be heated, but long-term drinking repeated heating of water is harmful to the human body.

      Question 4: stay in the air-conditioned room every day, how much water a day need to add?

      Everyone has this feeling, in the air-conditioned room to be a long time will be thirsty, the skin will be very dry, this is because the air conditioning environment, the humidity is much lower than nature. Not only in summer, but also in warm air conditioning in winter, and the temperature rise will allow water to accelerate evaporation. Under normal circumstances, a person needs to drink water every day 1500 ~ 2000 ml.

      Question 5: If my urine is deep, does it mean that I need to add more water?

Not necessarily. Urine color deepening can have many reasons, such as hemolytic disease, liver disease, drug effects. If you exclude these reasons, and it is indeed a large number of strenuous exercise after a long time or no water intake for a long time, then it should be added in time.