Why Is Water So Essential?
Water is a fundamental part of our lives. It is easy to forget how completely we depend on it. Human survival is dependent on water — water has been ranked by experts as second only to oxygen as essential for life. The average adult body is 55 to 75% water. 2/3 of your body weight is water (40 to 50 quarts). A human embryo is more than 80% water. A newborn baby is 74% water. Everyday your body must replace 2 1/2 quarts of water. The water you drink literally becomes you! Since such a large percentage of our bodies is water, water must obviously figure heavily in how our bodies function. We need lots of fresh water to stay healthy.
Aside from aiding in digestion and absorption of food, water regulates body temperature and blood circulation, carries nutrients and oxygen to cells, and removes toxins and other wastes. This “body water” also cushions joints and protects tissues and organs, including the spinal cord, from shock and damage. Conversely, lack of water (dehydration) can be the cause of many ailments. Chronic dehydration may cause certain problems for the body, including hypertension, asthma, allergies, and migraine headaches. Every process in our body occurs in a water medium. We can exist without food for 2 months or more, but we can only survive for a few days without water.
Most people don’t drink enough water. The body responds to this water deficiency in a variety of ways, which we frequently see as illnesses. Ongoing dehydration may cause actual disease as the body struggles to maintain itself with insufficient water.
Although water covers more than 70% of the Earth’s surface, only 1% of the Earth’s water is available as a source of drinking water. Unfortunately, Americans are finding that our limited supplies are often polluted with contaminants.