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Boaz Weisz, MD, and colleagues at the Sheba Medical Center in Tel-Hashomer, Israel, studied fasting, one-hour post-meal and two-hour post-meal glucose levels of women with gestational diabetes (diabetes with onset during pregnancy). Results of the study were published in the September 2001 issue of the American Journal of Obstetrics and Gynecology.
The researchers studied 68 women averaging 30.8 years of age who were newly diagnosed with gestational diabetes. For one week, patients measured their capillary blood-glucose levels at fasting and at one and two hours after meals. Above-normal glucose levels were considered to be higher than 95 mg/dl at fasting, higher than 140 mg/dl one hour after a meal and higher than 120 mg/dl two hours after a meal.
Researchers found that, following breakfast, glucose levels were above normal in 22.4 percent of patients one hour later and in 8.5 percent of patients two hours later. After dinner, glucose levels were above normal in 16.3 percent of patients one hour later and in a significant 30.1 percent of patients two hours later.
The higher glucose levels after dinner, compared to after breakfast, could be attributed to different types and amounts of food eaten, Dr. Weisz writes.
Researchers note that gauging glucose levels based on measurements taken one hour after breakfast and two hours after dinner "might" lead to stricter blood-glucose control in women with gestational diabetes.