The role of water for the human body
The adult human body consists of 70% water, children have water content in body tissues is up to 85%. Along with the water produced by the body, the toxins are removed and disposed of the decay products resulting from metabolism processes. Circulates the body, it ensures the supply of all internal organs with vitamins and microelements. So, within days after the brain is fifteen hundred gallons of water through the kidneys is about two liters.
But the liquid is not only constantly circulates in the body and its internal organs, it also constantly removed from it through sweat, urine and feces. Per day output of about 2.5 liters of fluid, which also contains some trace elements. Therefore, the supply of water, necessary for life support, must be constantly replenished. In the normal state to replenish water a person needs about 2-2,5 liters of water, but the needs of the body can increase if you are doing physical labor and sweating profusely or sweating stimulates hot weather.
One of the participants in the "Irish hunger strike" in 1981, lived for 77 days without food, eating daily only a small amount of water.
How much time a person lives without water
The lack of water in the body causes dehydration, which increases the density of blood and if the water does not flow, the blood eventually becomes so viscous that simply stops flowing through the veins and blood vessels, followed by imminent death. In normal circumstances, a person can live without water for 3-5 days, but if he is physically strong and trained, he will live a week. In medicine known cases where people have lived without a drop of liquid 10 days, but during this time his body has already occurred irreversible pathological changes.
Caravans in the desert, without water, placed in the mouth a small oval pebble and sucked it in my mouth not dry. It is possible to delay the symptoms of dehydration and get to the source.
But if the person would be without water in the hot desert, his death could occur within days – because of sweating and hence cooling of the body stops, he will die from heat stroke. Signs of dehydration are: dry mouth, rare urination, dark urine with a pungent smell of ammonia. In extreme stage, there is a feeling at the mote in the eyes begins to dry out the mucous membrane, and quickens the heartbeat. People may fall into a coma and lethargy, and he develops vomiting and diarrhea, and then comes shock and death.
Advice 2 : How long can you live without water?
Every day a person needs about two to three liters of water. On average, without water we can live only three days. If it does not move and stay at a moderate temperature, it is possible to extend this period for another few days. Life expectancy without water is dependent on the health status, environmental conditions and willpower.
The importance of water for human
A large part of the human body consists of water. Water is one of the most important substances necessary for life. Our muscles, organs, tissues and even bones are composed of water and require constant replenishment. The adult human body consists of water seventy percent, and the newborn child is almost ninety percent liquid.
Water moves in the body minerals and trace elements, eliminates toxins from the body, recycles the decay products, regulates body temperature. For the proper functioning of all organs and systems needed in day to consume about 40 milliliters of water per kilogram of weight. Also during the day, the organism appears about the same number. The lack of water in the body can lead to dehydration, a person dies in a few days.
How long can you live without water?
If without food a person can live a long time, water scarcity is strongly felt after a few hours, and leads to death in just a few days. The timing may be different depending on several factors. Scientists estimate that on average only 3 day to healthy people have died without water. But there are many cases when people are held 5 days a week and even 10 days. If, after such stress on the body of the man survives, his health would be irreparably damaged.
The record for survival without water is owned by the Japanese, who survived twenty-four days without food and liquid. Most of this time he spent unconscious.
First time of a lifetime without liquid dependent on ambient temperature and human activity: if you stay in the shade and sitting still with the air temperature from 16 to 23 degrees, you can survive up to 10 days. When the temperature increases 3 degrees, the lifetime is reduced without water for a day. In deserts, where the air is heated to 40 degrees during the day, a person can die in just two days.
Also the life expectancy in such conditions depends on the state of health, metabolic rate and physique of the person. Fat reserves help extend the life time.
The most common way of survival in conditions of water scarcity: take a small round pebble and put in his mouth. Thus stimulated the salivary glands that moisten the mouth that distracts from thirst and gives time and effort to find water. Also, the stone contains minerals that will support the body.
Advice 3 : How many people will live without food and water
The lack of food and water today seems impossible. It is nice to realize that a healthy person quite a long time can do without food.
Without food to survive is quite simple
On the duration of starvation affects many factors. Main of them — the willpower, the desire to test yourself or cleanse the body - working only in the case of a voluntary hunger strike. Many schools of alternative medicine recommend to arrange a long hunger strike to improve the condition of the body. But quite often peoplewho survived the disaster are forced to go without food for quite a long time. In this case, willpower primary.
Doctors believe that a healthy person whose body is not suffering from malnutrition and serious diseases, can fast up to eight weeks. Although there are precedents when people go without food (but not water) for a longer term, but it should be noted that many died of hunger and exhaustion until the expiration of the term.
What affects the duration of the hunger strike?
Strong people with adequate amount of adipose tissue can go without food longer than skinny. Because the body is trying to save energy in a variety of types. This fat, proteins and carbohydrates. During fasting, the human body uses carbohydrates first, then comes the turn of fatty tissue, and then and proteins. Therefore, theoretically, people can fast longer than the others.
For the duration of the starvation impact metabolism. If a person has a slow metabolism, without food it can hold more. Generally, when the body does not have enough food, the metabolism slows significantly, to waste less energy. To return it to normal speed quite difficult, even after returning to a normal diet.
The most important external factors — climate. Extreme heat or severe frosts are equally reduce the time a person can survive without food. In hot weather, the body quickly dehydrated, and in the cold — spends too a lot of calories to maintain its normal temperature. In a temperate climate without food "stretch" for a long time a lot easier.
Without water there is no life
The bad news is that the lack of water is far more destructive. Without it, the average person will spend three days, sometimes this period may be extended to five days. There have been cases when the human body fought with dehydration ten days, but health irreparably deteriorated. Because the survival of heart, kidney, brain, and blood viscosity directly depend on the amount you drink.
The absence of water, literally means for the body dying. For the normal functioning of the blood-vascular system is very important to the fluidity of the blood. Dehydration primarily reduces the fluidity of the blood, which in the end can not properly provide oxygen to the body organs. So without water, people will live much less than without food.