1. The origin, evolution and existence of life in water environment containing some minerals. In the course of 4 million years' evolution, human beings drink water "solution" instead of water "solvent" (pure H2O), and water without minerals is not good for life.
2. Pure water has lost its positive physiological function because of its purity (except trace elements and minerals beneficial to human health) and has become "stagnant water" with degraded functions. Long-term drinking can easily lead to sub-health problems such as weakness of limbs and listlessness, which is especially unfavorable to the development of fetuses and children. A senior doctor studying water in the United States pointed out with a large number of detailed data that the ideal soluble total solid content of drinking water is 300mg/l, the total hardness is about 170mg/l, and its pH value should be alkaline, which is quite beneficial to the prevention and treatment of cardiovascular and cerebrovascular diseases. Many developed countries stipulate that the hardness of drinking water is not less than 60 mg/L.
3. Pure water is weakly acidic water (pH 5 ~ 7). Long-term drinking will destroy the normal acid-base balance of human body and lead to acidification of human body. Leon, an American medical scientist and Nobel Prize winner, believes that acidic constitution is the source of all diseases.
4. Pure water has strong solubility. After drinking a lot, the original trace elements and nutrients in the body will be quickly dissolved in pure water and then excreted, which will make the nutrients in the human body lose balance, leading to malnutrition and decreased immunity.
At present, there are few positive reports about pure water to human health. On the contrary, many biomedical experiments and epidemiological investigations show that drinking pure water for a long time will have a negative impact on human health. For example, the clinical report of a hospital in Shanghai said: Some children have general fatigue, hair loss or baldness for unknown reasons. According to the doctor's investigation, the families of these small patients all use pure water as their daily drinking water. From June, 65438 to June, 1997, a children's hospital in Tianjin treated 9 children with muscle trembling and eyelid beating. After careful examination, it was found that these children were deficient in potassium and calcium. Only after asking their parents did they know that these children drank pure water all the year round. Therefore, some local governments in our country have instructed that primary and secondary school students are not allowed to drink pure water.
6. The United States, Western Europe, Japan and other developed countries have not included pure water in the category of drinking water, nor have they seen any national standards for drinking pure water in any developed country. The China Consumers Association has also officially issued a consumer warning that young children and the elderly should not drink pure water for a long time.