Moisture is an important component of the human body. About two-thirds of a person's body weight comes from liquid, and only one-third is solid matter. Human survival is inseparable from water. If the earth does not have water resources, then death will be waiting for mankind.
Water is a necessary substance to maintain brain thinking, blood flow, muscle movement and many other life activities. If two people are placed in the same environment, one cannot eat for a long time, and the other cannot drink water for a long time, which person will die faster? There is no doubt that it is the one who lacks water. The time a person can survive without drinking water is only 2-7 days, which varies depending on the individual's physical constitution and environment.
Biological experts said that in a high-temperature environment, an adult will emit an average of 1-1.5L of sweat per hour, and the body will lose a lot of water, while young children will be more likely to become dehydrated. We often see news like this: due to negligent parents leaving children alone in a hot car, the child eventually died of dehydration. Therefore, everyone must pay attention to hydration and do not wait until you are thirsty before drinking water.
Before people die of thirst, they will go through these four stages:
1. Thirst: For example, for a 100-pound person, once he loses about 2 pounds of his hand, he will feel thirsty, that is, It is said that when the water loss reaches 2% of the body weight, it is necessary to replenish water in time, otherwise it will cause uncomfortable symptoms such as rising body temperature, accelerated heart rate, and slowed blood flow.
2. Fainting: Fainting will occur when the water loss reaches 4% of the body weight. Taking a 100-pound person as an example, a loss of 4 pounds of water is equivalent to two days without drinking water. At this time, the human body basically stops sweating, the blood becomes concentrated, the skin becomes wrinkled, and the blood pressure also drops significantly, which can easily lead to syncope.
3. Organ damage: At this stage, water has lost about 7% of the body weight, which is equivalent to doing yoga for 8 hours continuously without replenishing any water. At this time, it is difficult to maintain blood pressure. In order to maintain the beating of the heart, blood flow will slow down. Organs such as kidneys and intestines are damaged one after another. Cell metabolic waste accumulates rapidly, and life is in danger.
4. Death: If a person weighs 100 kilograms and loses 10% of water, that is, 10 kilograms of water, he will die due to severe dehydration. If there is a lack of water in a high-temperature environment, the body temperature will be out of control and continue to rise, leading to overheating of the core organs, and eventually death from liver failure; if there is a lack of water in a cool environment, there will be excessive accumulation of toxic waste in the body, and eventually death will occur. Kidney failure.
When a person is dehydrated, they will experience symptoms such as thirst, dry and itchy skin, fatigue, dizziness, rapid pulse and shortness of breath. However, it should be noted that dehydration is not the only cause of these symptoms. It may also be caused by dehydration. It's an early sign of some illnesses, so if you're still feeling unwell after hydrating, consider seeing your doctor.
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