There are dozens of carcinogens, or carcinogenic precursors and new pathogenic microorganisms in the water. 80% of diseases and 50% of cancers in the world are caused by drinking unclean water.
The pollution sources of drinking water mainly include chlorine disinfection by-products, environmental endocrine disruptors, antibiotics, pesticides, hormones, polycyclic aromatic hydrocarbons, polychlorinated biphenyls, petroleum pollutants, microcystins, heavy metals and organic substances, as well as a series of visible and invisible pollution such as pipeline pollution, industrial pollution and water tank pollution.
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The hazards of drinking water are described as follows:
Water and food polluted by cadmium will cause kidney and bone diseases after people eat it. Ingestion of 20 mg of cadmium sulfate will lead to death. Lead poisoning can lead to anemia and insanity. The shelf life is short. When it exceeds 15 days, there will be more bacteria in the water, which is not suitable for drinking. Moreover, the water dispenser needs to be cleaned frequently, otherwise it is easy to breed bacteria and produce secondary pollution of drinking water.
Drinking unclean water for a long time will precipitate some pollutants on the blood vessel wall and accelerate cardiovascular and cerebrovascular sclerosis. Hypertension, heart disease, cerebral thrombosis and other diseases are directly related to drinking unclean water for a long time. The kidney is a filter net, and the blood flowing back from various parts of the body is mixed with a lot of waste and impurities, which are filtered by the kidney and excreted from the urethra.
Phoenix. Health expert: Drinking untreated water for a long time will bring health risks.
People's Daily Online-Expert advice: Pay attention to mineral nutrition and health in drinking water.