What does the glycemic index measure?

• A. Protein content in food
• B. How quickly foods raise blood glucose levels
• C. The fat content of foods
• D. The fiber content of foods

Answer: (B)

The glycemic index is a measure that indicates how quickly carbohydrate-containing food raises blood glucose levels after consumption. Foods with a high glycemic index are rapidly digested and absorbed, leading to a swift increase in blood sugar, while those with a low glycemic index result in a slower rise in blood glucose levels. This concept is particularly relevant for individuals managing diabetes or monitoring their blood sugar levels because it helps them understand the carbohydrate quality in their diet.

The other options do not pertain to the glycemic index: the protein, fat, and fiber content of foods are separate nutritional factors and do not relate directly to how carbohydrates specifically impact blood glucose levels. Thus, option B accurately represents what the glycemic index measures.