Date Posted: 6/7/2012 4:30:42 AM
Posted By: rodriguez mwalenga Membership Level: Silver Total Points: 110
All living things from the simplest to giant trees are made up largely of water. Two third of our body is composed of water, and we keep on losing it through our breath, respiration and in urine. Obviously the water lost from our bodies must be replaced. Totally starved of water, man will not live more than two to three days. In the absence of water, the kidney is unable to remove the harmful metabolic waste products. The normal requirement of water is around 2500 mls per day.People living in the high altitude and low temperature loose a great deal of water because they inhale almost dry air and exhale it fully saturated with water vapour at body temperature. Water loss on this account can go up to 500 mls a day or more. This is visible when we breath out in very cold days. Sometimes this applies to evaporation of water from the skin. The layer of air in immediate contact with the skin rises in temperature and draws moisture from it directly.Sometimes the water intake may have to go up above normal. This does not do do any harm especially when water is lost by evaporation. Where water loss is through excessive loss of minerals. Salt and some of their nutrients can be added in our water. Water should never be used for suppressing hunger nor for swallowing un-masticated un chewed food.
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