Not because bottled water is not clean, but because it is too "clean".
Pure water not only removes all substances harmful to human body, but also removes many "essential trace elements" which are very important to human health. The amount of these elements needed by human body is extremely small, which can be satisfied by normal diet every day. At present, this part of essential trace elements that can be obtained from normal drinking water is removed by drinking pure water, which cannot meet the normal needs of human body. Among them, zinc, magnesium and iodine are the most influential elements. Although the content of these elements in water is very small, they are scarce in food, and it is even worse to remove these trace elements from water now. In a normal diet, there are many inorganic salts that can be satisfied, such as tap water, and there are 30 kinds of inorganic salts needed by the human body. Now, if this part of the water is removed, the human body will not be able to supplement the required amount of inorganic salts.
After entering the human body, purified water has strong solubility because it does not contain all kinds of positive and negative ions. It can not only dissolve all kinds of harmful wastes and harmful trace elements, but also excrete them. At the same time, it can dissolve all kinds of essential trace elements that the human body needs very much and excrete them.
It is recommended to burn tap water for drinking. The content of zinc and iron in 1000 ml water is less than 0.2 mg. Adults need to supplement zinc 10 mg-15 mg and iron 12 mg-18 mg every day. Tap water is high in calcium and magnesium, which is really beneficial to human body.