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Dehydration: The Importance Of Water

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Dehydration: The Importance of Water

Dehydration is defined as a loss or insufficient levels of water and important blood salts like potassium and sodium in your body. Important organs like the kidneys, brain, and heart can not function properly without water and salt. Dehydration is most common in underdeveloped countries, were diseases like cholera and dysentery kill millions every year. Unfortunately infants and small children are the most likely victims. Still, if the right conditions are present like severe vomiting or diarrhea even those in modern countries like the U.S. can become dangerously dehydrated.

Water is the single most important element in the world. It is the very basis for all life on Earth. When we are babies, water accounts 70 to 80% of our body mass ( ). The older we get the more this percentage decreases, eventually balancing at approximately 60 to 65% for men and 50 to 60% for women ( ). The most important organ in the body, our brain, consists of 80% water ( ). The amount of adipose tissue in our bodies determines the natural percentage of this element. Women tend to have more of this fatty tissue thus decreasing the amount of water present. The chemical make up water, hydrogen and oxygen, are crucial to sustaining life because of the weak chemical bonds made with other molecules. This allows water to act as the primary solvent for many bodily functions like digestion. Water is also an incredibly efficient conductor of electricity. Our brain heavily relies on its ability to conduct electrochemical impulses to our neurons. These high level brain functions are the foundations for everything ranging from intellectual thought to more mundane actions like breathing. In addition to these characteristics, water, can be a great dietary aid. This is accomplished by its ability to suppress your appetite, reduce sodium levels, and eliminate waste and toxins. If we do not have sufficient levels of water in our systems our bodies will naturally conserve it to avoid dehydration. If our glands and organs are not nourished by water, their functions begin to deteriorate.

When the body's water supply is severely depleted, hypovolemic shock is likely to occur ( ). This condition is characterized by pale, cool, clammy skin; rapid heartbeat; and shallow breathing. Your blood pressure can also drop to the point it can not easily be measured, and skin coloration at the knees and elbows may become blotchy. You may also experience an increase in anxiety, restlessness, and of course thirst. Lack of water will also increase your core temperature and damage to the vital organs will occur after the body has reached 107 degrees Fahrenheit ( ). Dehydration can require hospitalization and intravenous fluid replacement. If your blood pressure drops enough, your body is more likely to go into shock and medical treatment will be required. When you are treated for dehydration, it is important that the underlying cause is alleviated. For example, if dehydration is caused by vomiting or diarrhea, medications may be prescribed to resolve these symptoms. People who are dehydrated due to diabetes, kidney disease, or adrenal gland disorders must receive treatment for these conditions as well as for the resulting dehydration. Being familiar with conditions that often lead to dehydration can be an advantage, some of these include: disease of the adrenal glands, which regulate the body's water and salt balance and the function of many organ systems, diabetes, eating disorders, kidney disease, and chronic lung disease ( ). Along with water, deficiencies in electrolytes can be dangerous.

Electrolytes like potassium, sodium, and chloride are mineral salts that conduct electricity when dissolved in water ( ). They help to maintain a variety of functions in the body. Some of these include: water balance, nerve cell function, and kidney and adrenal function. Potassium, specifically, is important for the conversion of blood sugar into glycogen, which is the how blood sugar is stored in the muscles and liver. A potassium shortage may result in lower levels of stored glycogen. When we exercise our muscles use glycogen for energy. A shortage of potassium can cause fatigue and muscle weakness. The electrolyte chloride is a negatively charged ion that joins with cations like sodium to form salt (sodium chloride) and with hydrogen to produce stomach acid (hydrochloric acid). Sodium and chloride are both found mainly in our extracellular fluid ( ). As one of the mineral electrolytes, chloride works closely with sodium and water to help distribute of bodily fluids. Along with sodium and potassium, chloride can be lost through heavy perspiration. Deficiencies in chloride can cause metabolic alkalosis, which occurs when bodily fluids become too alkaline ( ). It may also reduce the levels of fluids in our bodies and can cause us to lose potassium through our urine. In contrast, sodium is a positively charged ion found in our blood and fluids ( ). This electrolyte, also known as salt, is like potassium and is very soluble. It is easily absorbed by the stomach and small intestine. The

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