报载:家住黑龙江大庆市东风新村的80多岁的张大爷和老伴儿,平时特别注意保健。前些年,他们听说老年人要少吃盐,家中的菜从此就淡了下来,后来有一段时间甚至不放盐。可最近一段时间两位老人总感到头晕、胸闷、浑身乏力。经检查,医生说,两位老人盲目少吃甚至不吃盐,结果导致慢性低钠血症。像上述两位老人“过度保健”有害健康的现象,生活中并不少见。比如说老年 Reporter: Daqing Dongfeng Village, Heilongjiang Province, who lives more than 80-year-old Zhang uncle and his wife, usually pay special attention to health care. A few years ago, they heard that the elderly should eat less salt, and the family’s food was faded from then on. Afterward, salt was not added to it for some time. However, the two elderly people may feel dizzy, chest tightness and fatigue all the time. After examination, the doctor said that the two elderly blindly eat or not eat salt, resulting in chronic hyponatremia. Like the above two elderly “over care” harmful to health phenomenon, life is not uncommon. For example, old age