推荐回答(5个)
喝水喝多了坏处如下:
1、从大脑的机能来看,大量喝水后,人体易产生疲倦感觉,食欲大减,脑袋感到昏昏沉沉。医生指出,这是因为饮水过多冲淡了血液,全身细胞的氧交换就会受到影响,脑细胞一旦缺氧,人就会变得迟钝。
2、摄水过多会加重心、肾负担,所以有心脏病、高血压、肾病和水肿的人都不能一次大量猛喝,因劳动或运动而大量出汗后也不宜一次喝得太多。
3、过量饮用却会导致人体盐分过度流失,一些水分会被吸收到组织细胞内,使细胞水肿。开始会出现头昏眼花、虚弱无力、心跳加快等症状,严重时甚至会出现痉挛、意识障碍和昏迷,即水中毒。
4、晚上因为怕夜尿多造成肾脏负担,要适当减少;饭前人在饥饿状态时因为有胃酸分泌,喝太多会影响浓度,影响消化。
5、喝水过多,使血容量急剧增加,正在工作的心脏负担加重,须进行强有力收缩才能代偿。而肾脏在短时间内排泄出较多水分,亦会消耗能量,反复如此工作,心肾也会“疲劳”,使其功能减退。
水是人体必须的元素,其实人每天可以一天不吃东西,但是水的摄入确实必须的,但是水的优点这么明显,水到底有没有缺点我就来给大家讲解一下。
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水在大体上是没有什么缺点的,但就像酒不能贪杯是一样的,什么东西都不能摄取地太多,一旦摄取地太多就会出现一系列地问题,比如水的摄取如果太多,就会导致肾小体的压力过大,然后就会导致膀胱的压力过大,其实人是不能长时间让膀胱处于一个紧绷状态的,长久以往膀胱的收缩能力会大打折扣,这就是憋尿的坏处,在这里提醒大家一定不要憋尿。
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普通人一天摄取1.5L水就够了,这大概是八杯的量,当然这是普通人的量,如果是心脏有问题,或者说是肾功能稍微不太好的人,是禁止摄取大量的水的。因为这个过程会非常危险,会增加心脏和肾的负担,这种时候当然是压力越小越好,最好是一次性不喝太多水。
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直到全部排出体外再进行补充。其实人一天一般是喝不到八杯水的,因为很多人总是记不起来要摄取水。只有在非常口干舌燥的时候才会喝水,其实这也是对的,有专家指出,只需要在口渴的时候摄取水就可以了,不需要一直报着水喝,这种行为也是不对的,所以大家每天喝水也要注意量,不要随随便便抱着睡不停地喝,这其实对人体也是没有什么好处的,一定要记住。
一般正常人喝水太多,对身体没有什么危害,最多就是造成排尿多,经常跑厕所,感觉比较麻烦而已,但是对于心脏,肾功能功能比较弱,经常浮肿的病人,是不能大量喝水的,增加心脏和肾脏的负担,容易导致病情的加重。
当然是有坏处的,一方面水喝多泌尿次数会增多,且会增加肾脏负担,严重的会导致肾脏中毒,即人们常说的“水中毒”,适量饮水才是王道。
喝水喝多了没有,还着多喝水,只会让自己的皮肤比较滋润,让自己的身体比较健康,人体是需要水素的,所以没有坏处。
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