Health and convenience - When these words are added to bottled water, more and more pure water enters millions of households. Some people even use pure water instead of tap water. Then, the use of tap water seems to be There is only one way to clean it. But this is not a good thing for the elderly.
Shen Wei, director of the inspection department of Peking Union Medical College Hospital, told the “Life Times†reporter that through the deep processing of tap water for special processes, pure water removes some of the harmful substances in the water and is therefore “cleanerâ€; however, during processing and reverse osmosis It will also lose many beneficial minerals and trace elements such as calcium, magnesium, iron, sodium and potassium. The processing method of tap water is different from pure water, which ensures the existence of the original minerals and trace elements in the water. Therefore, in this sense, tap water is more "healthy" than pure water.
Fan Zhihong, associate professor of the College of Food Science and Nutritional Engineering at China Agricultural University, cautions that pure drinking water, although more popular, can not completely replace tap water in daily life. Especially for elderly people with osteoporosis, the lack of this element of pure water is exactly what the body needs to supplement. In particular, calcium, a large part of people's intake of it comes from tap water, such as long-term drinking pure water, the body is destined to "miss" this part of nutrition.
In addition, some experts pointed out that drinking pure water for a long time can lead to malnutrition of the body; drinking in large quantities will also take away useful trace elements in the human body, thus reducing the body's immunity.
Fan Zhihong said that although tap water is not as clean as pure water, as long as it is boiled, the existing harmful substances in the water will be eliminated. Under normal circumstances, people do not have to worry too much. For the elderly, pure water and tap water can also be used alternately in life. Since tea originally contains some trace elements beneficial to the body, it can be used to make tea with pure water. It can not only supplement essential trace elements, but also has good taste and does not bind theophylline. But when cooking vegetables, washing rice, cooking rice, and cooking soup, the general tap water will do.
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