Usefulness of Glycemic Index may be Limited

Research from the University of South Carolina's Arnold School of Public Health shows that the glycemic index may not be as helpful as we thought. The glycemic index is a measurement of how foods that contain carbohydrates change our blood sugar levels. It is thought that a low glycemic diet will keep blood sugar levels at a healthy level, which is good for diabetics and dieters.

Noted diabetes researcher Dr. Elizabeth Mayer-Davis says, "the limitation of the Glycemic Index is that the numbers in the index are based on blood-sugar levels recorded two hours after the ingestion of test foods, in a controlled experimental setting and after a person has fasted overnight."
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