Researchers recorded glucose concentration in 20 people with type 1 diabetes who were exposed to a moderately stressful psychological test after fasting. The 15-minute test involved making a speech and doing math calculations while being videotaped in front of an audience. A second group of 20 people with type 1 diabetes underwent the psychological stress test at the same time of day, but 75 minutes after they had eaten a carbohydrate-controlled meal.
All 40 participants had continuous glucose monitoring on a control day when they were not exposed to psychological stress. Stress did not affect glucose levels while participants were fasting. However, after participants ate a meal, stress significantly delayed the fall in post-meal glucose concentrations.
The delay became apparent 30 minutes after the onset of stress and lasted for about 2 hours. People with type 1 diabetes should be aware that psychological stress after mealtimes could have negative effects on their glucose levels, the researchers say. Diabetes Update 2: Adiponectin Levels Are Linked to Better Glycemic Control According to a study reported in the Journal of Clinical Endocrinology and Metabolism (Volume 45, page 4542 ), higher blood levels of adiponectin, a hormone produced by fat cells, are associated with better glycemic control and healthier blood lipid and lipoprotein levels in women with type 2 diabetes.
Adiponectin is thought to play an important role in regulating glucose and lipid levels. In a study of 925 women with type 2 diabetes, researchers measured blood levels of adiponectin, glucose, lipids, and inflammatory markers such as C-reactive protein, which are associated with increased risks of atherosclerosis (hardening of the arteries). Adiponectin levels were highest in women who were physically active and had high levels of HDL ( good ) cholesterol .
Women with lower adiponectin had higher levels of body mass, HbA1c, triglycerides, non-HDL cholesterol, C-reactive protein, and other inflammatory markers. The researchers conclude that adiponectin may help to prevent atherosclerosis, a common life-threatening cardiovascular problem in people with type 2 diabetes. Additional studies are needed to identify medications and lifestyle changes that can increase adiponectin levels.
For more Alerts and Special Reports, please visit the Diabetes Topic page. Posted in Diabetes on May 24, 2007 This information is not intended to substitute for the advice of a physician. Click here for additional information: Johns Hopkins Health Alerts Disclaimer Researchers recorded glucose concentration in 20 people with type 1 diabetes who were exposed to a moderately stressful psychological test after fasting.
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