获益匪浅。另外，“饿”到底是胃排空了的感觉还是血糖低的感觉？我们觉得饿了主要是胃部的感觉还是大脑对血糖浓度的评价？我觉得饿主要是胃部空空如也的感觉，这时候你赶紧喝两口水也就不觉得有那么饿了。当然几分钟之后那两口水被胃吸收和排空了，你又会觉得饿了。真正饿得头昏眼花可能才是跟血糖浓度有关。
the feeling of "胃部空空如也" is an indirect result of 血糖低
in other words, you cannot feel "血糖低",
but low blood sugar level can stimulate a long chain of mechanisms which finally result in stomach contracting and digestive juice secretion.
the feeling of "胃部空空如也" is stomach contracting & digestive juices secretion. So, a glass of water will dilute digestive juice and transiently inhibit stomach contracting which makes you feel not so hungry for a moment.
However, if the long chain of mechanisms which links "血糖低" and feeling of "胃部空空如也" is somehow blocked, one will not feel hungry even if blood sugar level is very low;
by contrast, if the long chain of mechanisms will be somehow stimulated without the signal of "血糖低", one will still feel hungry even if his blood sugar level is very high
but low blood sugar level can stimulate a long chain of mechanisms which finally result in stomach contracting and digestive juice secretion.
the feeling of "胃部空空如也" is stomach contracting & digestive juices secretion. So, a glass of water will dilute digestive juice and transiently inhibit stomach contracting which makes you feel not so hungry for a moment.
However, if the long chain of mechanisms which links "血糖低" and feeling of "胃部空空如也" is somehow blocked, one will not feel hungry even if blood sugar level is very low;
by contrast, if the long chain of mechanisms will be somehow stimulated without the signal of "血糖低", one will still feel hungry even if his blood sugar level is very high
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