What does the Glycemic Index measure?

• A. How effectively foods provide energy
• B. How quickly foods raise blood glucose levels
• C. The fiber content of foods
• D. The nutritional value of foods

Answer: (B)

The Glycemic Index (GI) specifically measures how quickly a carbohydrate-containing food raises blood glucose levels after consumption. Foods with a high GI are rapidly digested and absorbed, resulting in a quick surge in blood sugar, while those with a low GI result in a slower, more gradual increase in glucose levels. This measurement is particularly important for individuals managing conditions like diabetes, as it helps in planning meals that control blood sugar levels effectively.

While the other options provide relevant information about foods, they do not accurately capture the primary focus of the Glycemic Index. For instance, energy provision relates to calories rather than the speed of glucose absorption, fiber content pertains to digestive health but not directly to blood sugar impacts, and nutritional value encompasses a broader spectrum of vitamins, minerals, and overall health benefits which is not specific to the rate at which glucose levels rise.