How much to drink water per day?

Drinking my two or three cups of coffee or tea forof the day, at best - still a small bottle of mineral water - often this is all the liquid that we indulge in our body. And what about juices, which advertising represents almost a guarantee of health, or milk, which was considered as such ten years ago? How much to drink water a day "Fruit juices do notcontain a sufficient amount of water necessary to maintain the body's water balance, - considers the candidate of medical sciences, gastroenterologist, dietician Valery Sergeyev. - Water, meanwhile, is necessary in order to digest and break down sugars and proteins. When we drink milk or juice, some of the water contained in them is used to digest the sugar and protein from the drink itself. ” In addition, sugar is added to most of the juices from the bags, which causes thirst and creates an additional “sugar” load on the pancreas, as well as acids - citric, ascorbic - and synthesized vitamins. Carbonated drinks often include corn syrup that contains a large amount of fructose, which is transformed directly into triglycerides (building material for fat), and not into glucose, which is the fuel for the brain. Now about milk: its protein is digested for quite a long time, and for the breakdown of lactose (milk sugar), the enzyme lactase is required, which is not produced in all people. Freshly squeezed juices are healthier, but this is also a kind of super-concentrated artificial drink - it would be much more beneficial to eat the whole fruit, along with the fiber contained in it, the ballast substances. In short, no other liquids — even those that we are accustomed to consider useful and natural — will replace ordinary drinking water. One chemistry lessons left many people remember only the formula of water H2O, as well as the certainty that life wouldn’t have happened without water on our planet. This is true: with her direct participation, practically all biochemical reactions take place. After all, water is a universal solvent. Building material for constant renewal of the body (that is, for the synthesis of proteins) and energy sources (carbohydrates), oxygen, hormones and enzymes circulate in the intercellular space and enter cells, being dissolved in water. And metabolic products are removed from cells and from the body also in solution. Water “enters and exits” through special water channels located in the plasma sheath of cells called “aquaporins” (for their discovery by two American scientists - Peter Agra (Peter Agree) and Roderic McKinnon - was awarded the Nobel Prize in 2003 in chemistry). If other substances join the water molecule, because the dissolution process is accompanied by complex interactions with salts, sugars, acids, alcohol, chemicals that have arisen in the process of assimilating drugs or additives in food, then these bulky formations cannot pass through a small water pore. There seems to be water in the body (sometimes it is even too much, and we call it fluid retention, edema), but it does not penetrate into the cells, as a result of which the exchange processes are inhibited, no slags are removed. Naturally, a person feels an incomprehensible malaise, fatigue, the cause of which is literally dissolved in water.