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生命之源在于水 人可以七日无餐,但不可以一日无水。在人体的组成物质中,水含量最大,约占体重的三分之二。人较长时间不进餐,仍可勉强维持生命,直至体内贮存的糖和脂肪完全耗尽,蛋白质也失去一半以上时,生命才会终结,但若机体失水达体重的20％时,就无法维持生命,即使失水2％,也会干扰正常的生理机能,时间一长,还会加速衰老过程,表现为皮肤干燥、早现皱纹、津液不足、大便秘结等症状。英国医学家最近探明,人体在缺水时会产生防止水流失的组胺,组胺能促使血管、胃肠和支气管平滑肌收缩,以防止更多水
The source of life is that people in the water can have no food for seven days, but they can not do it without water. The composition of the human body, the largest water content, accounting for about two-thirds of the body weight. People do not eat for a long time, can barely survive until the body completely stored sugar and fat exhausted, protein is also lost when more than half the end of life, but if the body lost more than 20% of body weight, it can not Maintaining life, even if the water loss of 2%, will interfere with normal physiological function, over time, but also accelerate the aging process, manifested as dry skin, early wrinkles, fluid shortage, constipation and other symptoms. British medical scientists recently proved that when the body produces water to prevent water loss of histamine, histamine can promote vascular, gastrointestinal and bronchial smooth muscle contraction to prevent more water