First of all, the importance of drinking water to health
It is recognized by various schools that water participates in the physiological function of human body. Body fluids account for about 70% of human body weight, which is necessary to maintain normal physiological function. Its functions are: to participate in the digestion and absorption of food and transport nutrition; Participate in metabolism and excretion of metabolites in the body; Participate in thermoregulation; Keep the lubrication of organs, joints, ligaments, muscle sheaths, etc. Water is the foundation of life.
Traditional drinking water hygiene research believes that trace elements in water are very important to human health. For example, fluoride in drinking water, children's dental caries rate becomes higher in low fluoride water areas, and the prevalence of dental fluorosis and skeletal fluorosis increases in high fluoride water areas. Too low and too high iodine content in drinking water will lead to thyroid diseases. In recent years, domestic scholars have written that the trace elements that people ingest from food can meet the needs of the human body, and the trace elements in drinking water are not important to human health. However, this argument has no sufficient scientific basis and cannot overturn the positive effects of trace elements and minerals in water on human health. At the same time, the concept of "healthy water" put forward by foreign scholars on the basis of scientific research in recent years has deepened the positive effects of trace elements and minerals in drinking water on human health.
Second, what kind of water is good for health?
The criteria for drinking water sanitation workers to judge whether drinking water is beneficial to health from the perspective of hygiene are:
First of all, drinking water must meet the national drinking water hygiene standards. Based on the "benchmark", the standard is a safety valve from the perspective of protecting human health and combining with China's national conditions (technology, economy, residents' culture and health quality).
Second, you should drink unpolluted water. The sanitary situation of drinking water in China shows that microbial pollution and chemical pollution coexist in drinking water; Generally speaking, microbial pollution is the main factor. Some developing countries in the world once ignored or even canceled the chlorination of drinking water because of their one-sided understanding of the by-products of chlorination disinfection, which led to the outbreak of intestinal infectious diseases caused by microbial contamination of drinking water. It is worth learning from China and should continue to strengthen the disinfection and management of drinking water. The chemical pollution of drinking water in China should pay special attention to organic pollution and algal toxin pollution caused by eutrophication and algae pollution, and strengthen the advanced treatment of water.
Third, you should drink mineral water with proper trace elements. At present, the pure water supplied in the market is used as a supplement to drinking water or as a beverage. The choice of pure water varies from person to person, and there is no report that there is enough scientific evidence to cause harm to people's health. Because of the taste advantage, pure water still has a market. At present, the contents of trace elements and minerals in water are the most suitable in China, and how to artificially mineralize pure water should be studied.
Theoretically speaking, unpolluted natural water (also known as natural water) and natural water containing appropriate trace elements and minerals belong to the category of healthy water and are promising drinking water. With the in-depth study of "water mass theory", it will promote the development of natural water; Domestic drinking water consumption psychology and market trends also show that natural water has broad prospects.
Three. Scientific research on drinking water and health
In recent years, the research on drinking water and health in domestic health departments, medical colleges, Chinese Academy of Preventive Medicine and health and epidemic prevention stations at all levels has failed. The reasons are as follows: first, the health authorities have not paid enough attention to it; Second, there is a shortage of scientific research funds; Third, the research is difficult. In addition, there is no good research atmosphere in the field of drinking water and health research. For example, some scientific research is not in-depth and the foundation is not enough, that is, writing a biography for a drinking water industry. There have also been cases where once an academic point of view that is not conducive to a drinking water industry is put forward, the scholar will be unreasonably accused and threatened. There are many reports on the drinking water industry in the news media, but there are few down-to-earth research and high-quality scientific research results by researchers. In this context, some scientists who have been engaged in drinking water hygiene for a long time have rarely participated in the research on drinking water and health in recent years. In view of this, it is very important to form a good scientific research atmosphere and carry out research on drinking water and health with a scientific attitude. At the same time, the health department should put scientific research on drinking water and health on the important agenda, and should mobilize accomplished professionals in the health system to participate in this research. Health scientists and water treatment scientists should cooperate closely to carry out multidisciplinary comprehensive research. We should actively introduce foreign scientific research achievements, so that our country can have a higher starting point in this field and enjoy the scientific research achievements shared by mankind. Finally, drawing lessons from foreign experience, it is suggested that some influential domestic drinking water production enterprises provide scientific research funding sponsorship and directly participate in scientific research in this field. Many efforts have been made to promote the in-depth development of scientific research on drinking water and health in China.