Certified Diabetes Educator Practice Exam

Question: 1 / 400

What does the glycemic index measure?

The rise in blood glucose after one hour

The rise in blood glucose at 2 hours following ingestion of a carbohydrate portion

The glycemic index is a measure of how quickly a carbohydrate-containing food raises blood glucose levels after consumption. It specifically evaluates the blood glucose response over a set period of time, typically two hours after eating. This timeframe is critical for assessing how different foods can impact blood sugar levels, which is particularly important for individuals managing diabetes. Foods with a high glycemic index are absorbed quickly, leading to a rapid increase in blood glucose, while those with a low glycemic index result in a slower, more gradual rise.

The rationale behind focusing on the two-hour post-ingestion mark is that it helps provide a standardized reference point, allowing comparisons across different foods. This can assist individuals with diabetes in meal planning by choosing foods that help maintain better overall glycemic control. Understanding this concept supports the management of postprandial (after meal) glucose levels, which is essential for overall health in individuals with diabetes.

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The fall in blood glucose after eating

The total blood glucose levels over a day

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