In many ways, any living being is the product of water. The figures are relevant for this assumption: the human body contains 60% water. A newborn has at birth 64% water in his organism while the fetus in the third month of pregnancy has in his tissues, 91% water. As a man ages he starts to dry: around the age of 70, the body contains 46% water. The body is composed of 25% solids and 75% liquid material in which the solvent is water. Furthermore, even the brain tissue is composed of 85% water (Wedro, Conrad Stöppler, 2011). The role of water in ensuring the health of the human body is essential. Without water, humans cannot live. Water metabolism disorders produce signals that indicate a significant de-harmonization of the biological systems. The distribution of water in the body through metabolic processes not only makes a water supply, but also ensures the transport of hormones, chemicals, and nutrients required, in accordance with the parameters set by the brain. Water carries nutrients into the body, blood and lymph and helps them to fulfill their functions, supplies nerve routes, ensure maintenance and reproduction capacity at the cellular level, regulates the temperature of the biological system and has the function to remove through the skin, lungs, kidneys and intestines toxins and inert waste from the body.
Ingested water is transported through the blood throughout the body and is retained in tissues as needed. The body's water reserves are found mainly in the muscles and skin. In addition, other organs contain a significant amount of water that facilitates the functioning of brain, liver, blood plasma, lungs, etc.
Water is the main solvent for the products of digestion, and it is essential for the elimination of wastes and toxins from the body. Moreover, water itself is a weak electrolyte, which dissociates into hydrogen ions (H +) and hydroxyl ions. These ions can serve as a catalyst, accelerating reactions that normally would take much more than a few seconds. (OH). Another important property of water is represented by its capacity to dissipate heat through evaporation. This characteristic has an important role in the physiology of thermo-regulation. At high atmospheric temperatures, the body receives much more heat than it needs. If this heat is not dissipated, the body will suffer. Fortunately, the human body has several mechanisms to remove heat. One of them is based on the presence of water and it involves changing water from its liquid to gaseous state with a heat loss (sweating). Thus, each gram of water evaporated from the surface of the skin at room temperature, facilitates the loss of 580 calories.
For these reasons, dehydration has become a major problem for many people and it can lead to more serious diseases and even cause death if not be given the proper consideration. The first signs of dehydration include feeling dizzy, rapid heartbeat, dry mouth, fatigue, and irritability. Low water intake increases histamine, and...