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Originally Posted by homeschoolmom .... I have read that any time your blood sugar goes over 140, you are damaging your body. Is this true? ..... |
I have also seen that said in various websites on the net. The notion that BG levels above 140 cause damage is based on glucose tolerance test results, and the association with various complications. A short spike is probably ok, but when BG stays over 140 for any length of time, it seems to do a lot of damage. For details go to this link
Research Connecting Organ Damage with Blood Sugar Level . It refers to various studies that indicate prolonged periods of BG being over 140 are not good.
The article also points out that in many cases fasting blood glucose levels are near normal, while GTT results go over 140. It highlights the fact that the FBG test is not adequate in identifying blood glucose problems. Your sister's level of 177 an hour after eating is high. Perhaps you should suggest that she has a glucose tolerance test done.
Below is a graph that shows normal levels during the course of the day. Note that breakfast was at 7:30am and blood glucose peaked, on average, at 125 about 45 minutes after eating.