炎热的夏季,人们常挥汗如雨,当缺水量占体重2～3％时即出现口渴感觉。这是因为流出的汗水中带走了体内部分盐份,此时若立即狂饮,只补充水,而不补充盐,血液中水与盐比例便失去平衡。当缺钠多于缺水时,就会感到疲乏、头晕、手足麻木,肠胃剧痛,重则可能引起周围循环衰竭或休克的危险。莫等口渴再喝水是正确的,但也不能狂饮。 Hot summer, people often sweat, when the water shortage accounts for 2 to 3% of body weight when thirst feeling. This is because sweat out of the body took away part of the salt, then immediately drink, only add water, without salt, the proportion of water and salt in the blood will be out of balance. When lack of sodium more than water, you will feel tired, dizzy, numb hands and feet, stomach pain, weight may cause around the risk of circulatory failure or shock. Mo and other thirst to drink water is correct, but also can not drink.