The water molecule consists of oxygen and hydrogen, but the water that we drink from sources or from a water pipe contains a lot of impurities of mineral elements. Each time the water composition changes during boiling, its density increases. Boil water twice can not, and that's why - you can damage the body by using heavy water.
When boiling, some of the water evaporates, but only the lightest H2O molecules take the vapor state. At the same time, salts and minerals remain in the kettle, while making water more concentrated by impurities. Also, during the decomposition of water molecules, hydrogen isotopes are formed, which weight the water and make it harmful.
If you are going to boil water several times for the purpose of disinfection, biologist scientists have established that the main part of microorganisms perishes at the first boiling. New microbes form only a few hours later.
Can I boil water twice?
It is not recommended to boil water several times. Simple consumers, after seeing how the scum settles on the bottom and walls of the kettle, often think that a similar process occurs in the stomach and intestines. Therefore, begin to boil water almost ten times. But in the body, the minerals first absorb (in the small intestine), and then in the last stages of digestion of water molecules (in the large intestine). Therefore, the stronger the concentration of impurities in the water, the more you immediately poison your body.
Where do these impurities come from? Artesian water passes through many layers of soil and underground layers, each containing salts, chalk, sand, etc. All these layers saturate the water with their constituents. Tap water must be chlorinated for disinfection purposes. In the process of boiling, only pure water molecules evaporate, and the impurities remain. The hot water supplied by the central water supply is often provided with a lot of reagents, it is strictly forbidden to drink, even boiled.
Boiled water has a different taste, many consider it unpleasant.
When the temperature rises above 90 degrees, organochlorine compounds form. The longer the water boils, the more active the development of these negative substances for health. Therefore, water can not be boiled twice, otherwise you will harm your health - provoke the formation of concrements in the kidneys and gall bladder, the vessels lose their elasticity from chlororganic substances and increase the risk of atherosclerotic plaques. Because of the subsidence of the hydrogen isotope in the organism, the assimilation of vitamins of different groups will deteriorate and metabolic processes in the body will be disturbed.