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Dehydration - A Major Health Concern Water is the essence of life. It is the most important nutrient in our bodies, making up roughly 70 percent of our muscle and brain tissue. Only oxygen is craved by the body more than water. Unfortunately, most Americans and Canadians do not consume sufficient water every day to meet their bodies' most basic requirements, leaving them dehydrated. Dehydration itself is responsible for a wide range of common ailments experienced by just about everyone in today's busy, fast-paced world, including headache and fatigue. When we breathe, we lose moisture to the air every time we exhale - as much as two cups a day! Furthermore, our bodies lose water through evaporation from the surface of our skin even without rigorous exercise, and of course we also pass water in our urine. During the course of an average day, a healthy adult can lose eight to 10 cups of water. Add in exercise, and this number rises considerably. If we fail to replenish the water we lose through these natural processes, we set off a physiological reaction that can have serious health effects. The following is the natural progression of dehydration and its effects on the body (symptoms): Mild  because your kidneys will begin to conserve water, your urine will become concentrated and will be amber colored as opposed to a normal light-tinted yellow color.  constipation and/or bloating may be noticed  dry skin, mucous membranes, and lips  thirst, often extreme  flushed face Moderate  fatigue  sunken eyes or sunken fontanels (soft spot on head) in infants  lack of tears in crying infant  "doughy" skin that doesn't bounce back when pinched  dizziness / vertigo / lightheadedness  up to 30% decline in physical labor capacity, muscle cramping  headache  cold hands and feet  problems concentrating  drowsiness  fainting  impatience and extreme irritability  major reduction in urine production Severe  weak irregular heart beat (often racing) and low blood pressure  rapid breathing  failure of body's heat regulation systems (sweating, for example)  confusion  vomiting and/or diarrhea  shock, collapse or unconsciousness  seizures coma and death http://www.home-water-purifiers-and-filters.com/dehydration-information.php