Water is the most important element for living beings and there are organisms that can have almost 90% of their weight in water.
Dehydration is a condition in which a person losses more fluids than the necessary to maintain correct functioning of the organism.
Dehydration can have a varied etiology and occurs when the amount of water in the body is too low.
The easiest way to avoid dehydration is to drink large amounts of liquid throughout the day, especially on hotter days, since the body is unable to produce the liquid and it needs them for its proper fun
Water is the most important element for living beings and there are organisms that can have almost 90% of their weight in water. Our body is composed of approximately 70% of water and this high value indicates the importance of this element for our organism. The water from our body can be divided into two compartments: The intracellular fluid which is the major component representing about two-thirds of body water and the extracellular fluid which can be divided into interstitial fluid (between cells) and plasma. Plasma volume represents approximately one quarter of the extracellular volume. Water is involved in several physiological mechanisms and their balance, as well as the balance of electrolytes, has major influence on its absorption and / or excretion, being regulated by precise molecular mechanisms in constant balance. If a person loses 10% of the water in his body his life can be at risk. If the lost is from 20% the health condition is so severe that can lead to death. The amount of water to be taken daily should represent at least 3% of body weight, which means the average requirement of water per person is about 2 liters per day.
Dehydration is a condition in which a person losses more fluids than the necessary to maintain correct functioning of the organism. Being a physiologically regulated balance, dehydration occurs when there is an alteration in the balance, due to a decrease in fluid intake or an increase in fluid losses by the body. Dehydration can be qualified as mild, moderate, or severe, depending on the amount of fluid lost and not being replenished, the condition being severe and life-threatening. Effectively a person can suffer from dehydration being the latter caused by two different processes but in the end provoking a similar condition: hydro electrolytic imbalance. Sometimes the lack of fluids may be due to a reduced intake of water due, for example, to nausea, loss of thirst and appetite related with an illness etc. However, these causes usually represent a small percentage of dehydration cases and usually don’t lead to a moderate or severe case. Finally, the other process responsible for the lack of fluids in the body is the excessive loss of water caused by: excessive sweating, fever, polyuria, vomiting and / or diarrhea. Dehydration is not a serious problem in adolescents as it can became for infants or young children. Small losses of fluids are not a problem and, in most of cases, go completely unnoticed. Still, not drinking enough liquids to replenish fluid losses can affect the general condition of the body.
Dehydration can have a varied etiology and occurs when the amount of water in the body is too low. The causes of dehydration include not drinking enough fluids, losing a large amount of fluids through sweating (especially when it is very hot), or through certain diseases that can cause abnormal fluid loss due to symptoms such as fever, vomiting or diarrhea. Diarrhea causes an increased loss of water and electrolytes, including sodium, chloride, and potassium. These episodes usually affect mainly children and elderly people and may also be the result of gastrointestinal diseases of bacterial, viral or parasitic origin. If these losses are not adequately replaced, a water and electrolyte deficit develops causing dehydration.
The easiest way to avoid dehydration is to drink large amounts of liquid throughout the day, especially on hotter days, since the body is unable to produce the liquid and it needs them for its proper functioning. Adequate amounts of fluids are to be consumed, where water is usually the best choice, but it is also possible ensuring suficient hydration by consuming foods rich in water (milk, yogurt, chard, tomato, watermelon, broccoli, spinach, carrots, etc). If the loss of fluids is not replenished properly, a person may suffer from dehydration. In any case, the quantity of water for each individual varies according to the needs of the body, physical condition, age, sex, physical activity level or environmental conditions.