高血糖的征兆

高血糖也不是“无迹可寻”，当血糖升高，身体会出现5个比较显着、易辨识的征兆。


症状一：浑身乏力

身体没力气的原因有很多，可是如果一整天身体都感觉疲劳没精力，下半身、腰部膝盖、两个小腿特别没力气，那就要注意了，可能是高血糖。


症状二：总觉得很饿

有高血糖的人比较显着的特色便是简单感到饿，这主要是因为体内糖分随小便排出，血糖不能被送入机体细胞，很多葡萄糖丢掉，导致细胞能量不足，细胞缺糖的影响信号就不断传入大脑，从而使大脑发出“饥饿”的信号。


症状三：频繁小便，尿多

有高血糖的人，不仅尿尿的次数会增多，尿量也会增多，24小时排尿可达20屡次，尿量可达2-3升以至10升之多，而且尿的泡沫多，尿渍发白、发粘。多尿是因为血糖升高，超越肾糖阈(8.9~10mmol/l)，排入尿中的糖多，所以尿次数与尿量增多。


症状四：十分简单口渴

排尿过多会导致体内水分减少，当体内水分的总量减少了1~2%时，会引起大脑口渴中枢的兴奋而发生想要喝水极端口渴的生理现象。


症状五：食量大增反而变瘦了

有高血糖的人血糖偏高，葡萄糖不能很好地被机体吸收使用而是从尿中很多丢掉，所以机体只能经过分解脂肪、蛋白质来提供能量，成果可能导致全身消瘦、乏力，机体免疫力下降。




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