“水中毒”是怎么回事?每天该喝多少水?
Normal kidneys can release up to a quart of fluid every hour. If you drink more than that, you’ll retain the excess water in your body, which causes a condition known as hyponatremia and can be hazardous to your health. 正常情况下,肾脏的排水能力约为每小时1夸脱。如果水分摄入过多,就会导致多余的水分在体内潴留,这将导致低钠血症,可能会对人的健康造成危害。
Mild hyponatremia causes few symptoms, but more severe cases can lead to brain swelling and progressive neurological symptoms, including confusion, disorientation, seizures, coma and sometimes death. 轻度低钠血症引起的症状虽然不多,但严重的话可能造成脑肿胀和渐进性神经系统症状,如精神错乱、定向障碍、癫痫、昏迷,甚至危及生命。
每天喝多少水才合适?
Ideal fluid intake varies by person, depending on a variety of factors. But for most people, drinking more than needed to maintain water balance is neither necessary nor medically helpful. 理想的摄入量因人而异,取决于多种因素。但对于大多数人来说,为了维持身体水分的平衡而摄入过多水分,既没有必要,也不会有医学上的帮助。
► 在温和气候条件下,低身体活动水平成年男性每天需喝水1700毫升,成年女性每天喝水1500毫升。
► 夏天或大量出汗时,补水要遵循先快后慢、分次补充、量出为入三个原则。
专家介绍,可根据气温高低,每天喝1.5升—2升水,出汗较多时可适当补充一些盐水。对于慢性肾脏病患者、心血管疾病患者,需要合理控制饮水量。
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