【Written at the end】 Humans are made of water, but the water content in different people is different. The weight of water in a newborn baby accounts for as much as 75% of its body weight, while an average adult has about 60% water, and some obese people have only about 45%. A 70kg male has about 42L of water in his body, which can be divided into intracellular fluid and extracellular fluid. Intracellular fluid accounts for 2/3 of the body water, about 28L. Extracellular fluid accounts for 1/3, about 14L. Of this 14L of extracellular fluid, 4L is blood, 6L is interstitial fluid, and 4L is transcellular fluid. · Under normal circumstances, people excrete about 2-3L of water every day through urination, sweating, breathing, etc. When a large amount of water is lost in a short period of time or the water is not replenished enough, people will become dehydrated. When the water loss reaches 2%-3% of body weight, it will be mildly dehydrated, and symptoms such as dizziness, headache and thirst will appear. If the water loss reaches 3%-6%, it will be moderately dehydrated, and symptoms of circulatory insufficiency will appear. When the water loss reaches more than 6%, it is severe dehydration, and shock and coma will occur. |
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