为什么清晨反而比晚睡前的血糖水平高.doc

为什么清晨反而比晚睡前的血糖水平高？ 将近半年多了，有两位朋友一直在问我，为什么她们清晨的空腹血糖比晚睡前还高？照理，一夜过去，又没吃东西，到早晨血糖应该更低才对呀。我推想是内分泌系统在临晨发生小小兵乱，苦于没有证据，不可妄言。今天发现了一篇好文章，答案找到了！既然已经帮朋友翻译过来了，就贴在这儿，供糖尿病和准糖尿病患友参考。 早晨空腹血糖高的原因有三个， 1.黎明现象, 这是身体自然的反应，是为了预备身体将要开始新的一天的工作所需要的能量，正常的人会分泌相应量的胰岛素来控制此时的血糖水平，有糖尿病的人，控制能力底了，所以血糖升高。2。Somogyi 效应，这是一位医生发现的现象，所以以他的名字命名。当你半夜血糖水平降得太低时，身体为了保护自己，通过分泌其他激素而提高血糖水平，如果你睡觉前吃一点小点，就不会有这个问题。3. waning insulin (胰岛素缺乏）， 通常发生在已经在用胰岛素治疗糖尿病的患者身上。 怎样分辨你是那一种原因造成的？以下是简易的方法。 1。分别测定临晨3点，早晨的空腹血糖，如果3点时血糖正常，而清晨血糖较高，你可能是黎明现象。 2。如果3点时血糖偏低，而清晨血糖较高，那么就是Somogyi 效应。 3。如果3点时血糖比上床睡觉的时候，到早晨还持续高，说明是胰岛素缺乏。原文如下：Rocky Morning Highs? With a little sleuthing you can identify—and fight—the causes of those rises in waking blood glucose By Terri DArrigoSeptember 2008 Other Monitoring, BG and A1C Sometimes diabetes doesnt make a whole lot of sense. Take those mornings when you wake up with blood glucose thats higher than it was when you went to sleep. Youd think that not eating for those seven or eight hours would give you lower blood glucose. But in fact, there are three reasons your blood glucose may be higher in the morning: the dawn phenomenon, the Somogyi effect, or waning insulin. The Dawn Phenomenon The dawn phenomenon is a natural rise in blood glucose between the hours of 4:00 a.m. and 8:00 a.m., and it occurs because of hormonal changes in the body. The body does several things to get ready for the day, says David S. Schade, MD, professor of medicine and chief of the Division of Endocrinology at the University of New Mexico School of Medicine in Albuquerque. The body releases hormones like cortisol and growth hormone and the blood glucose rises. People without diabetes just secrete more insulin to handle the blood glucose, but for people with diabetes, the rise in blood glucose can be substantial. Schade notes that the effects of dawn phenomenon vary in each person, and your blood glucose may be higher on some mornings than on others. You can do the same exercise and eat the same thing every day and have different