Water makes up 55-56% of the human
body weight, and it consists of important physiological role in virtually every organ system in the body. Adequate intake of water is essential for the
health, and it improves the performance of the body both physical and mental. Because
every living cell in the human body, (blood 83%, muscles 75%, brain 74% and
bones 10%), depends on water for nourishment, elimination of waste, insulation,
cooling and provision of moist environment for the ear, nose and throat
tissues (Andersson 2008).
Recent studies show that most American children and teenagers do not drink enough fluids, thereby leaving them mildly dehydrated. 25% of American children ages 6-19, do not drink water as part of their daily fluid intake.
Most of the Harvard scientists's findings prove that in schools, children consume soda drinks, more than they consume water. According to Erica Kenney, a postdoctoral researcher, at Harvard's T.H. Chan School of Public Health, kids are not drinking that much fluid.