Water is an essential nutrient to the human body.
Water is essential in the digestion and transportation of food, in the lubrication of joints, in the regulation of body temperature, and in cellular processes - all physiological functions in one way or another rely on water. One reason water is so important to the human body is because it is a solvent- it is able to mix with other substances, and suspend other substances within it. It is this solvent property that makes it possible for water to dissolve and transport nutrients to where they are needed, carry waste materials to the kidneys and out of the body, and suspend enzymes and organelles within the cells. Water's Structure Water is able to act as a solvent because of its unique molecular structure. The two hydrogen atoms and one oxygen atom that form water are held together by an extremely strong bond known as a covalent bond, which exists when molecules share electrons.