Thursday, March 5, 2015
Quality Health Care and You - Diabetes
Not sure of glucose reading?
Question: Being on a low carbohydrate high protein diet is it possible to get a higher glucose reading in the morning after getting a lower reading at night before bed and having fasted for 10 hours? I have not been diagnosed as a diabetic.
Yes, it is possible that the morning glucose reading could be higher than the night before, even after having fasted for 10 hours. The body’s glucose is maintained 24 hours a day through several mechanisms; the actual glucose value will normally fluctuate from 90 to 110 mg/dl daily, even in a fasting state. The liver produces glucose during times of fasting, and during prolonged fasts (24 hours or longer), fat is broken down for energy.
Diabetes is defined as having a fasting glucose of 126 mg/dl or higher on two different occasions, or a level greater than 200 mg/dl with symptoms (extreme thirst, urination frequently, extreme hunger, with weight loss). An A1c is a 3-month snapshot of one’s glucose 24 hours, 7 days a week – normal is less than 5.8%. You can ask your doctor to do an A1c if you are concerned about having diabetes.
W. Fred Miser, MD
Professor of Family Medicine
Director of Ohio State Medicine Residency Program
College of Medicine
The Ohio State University