A person might live for a number of weeks without eating food, but he could live only a few days without drinking water.
Water has many uses in the body:
Water is the greatest known solvent. Because of this property, water is extremely important in the processes of digestion.
Water is a great carrier. Water helps carry food materials to all parts of the body; and it aids in carrying off the wastes of the body.
Water assists in regulating the temperature of the body. Because water is present in blood, and blood flows from the warmer interior of the body to the colder exterior, the water aids in distributing the heat of the body. The evaporation of perspiration, which is largely composed of water, also aids in regulating body temperature.
It is thus readily seen that water is needed to keep the machinery of the body working smoothly. The uses of water may be summed up in the statement: Water aids in regulating body processes.
