Medical Definition of Glycemic index

Glycemic index: An indicator of the ability of different types of foods that contain carbohydrate to raise the blood glucose levels within 2 hours. Foods containing carbohydrates that break down most quickly during digestion have the highest glycemic index. Also called the dietary glycemic index.

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Diet-Wrecking Foods: Smoothies, Lattes, Popcorn, and More in Pictures See Slideshow