Which statement best defines glycemic index?

Which statement best defines glycemic index?

• A. A measure of how much a carbohydrate-containing food raises blood glucose levels relative to a reference food
• B. A measure of vitamin content
• C. A measure of total fat content
• D. A measure of protein quality

Answer: (A)

Glycemic index shows how fast the carbohydrates in a food raise blood glucose after you eat, using a standard reference food set at a value of 100. A high GI means a quick, larger spike in blood glucose, while a low GI means a slower, more gradual rise. This measure applies specifically to carbohydrate-containing foods, not vitamins, fats, or protein quality. Using GI helps you choose foods that promote steadier energy and better blood sugar control.

Glycemic index shows how fast the carbohydrates in a food raise blood glucose after you eat, using a standard reference food set at a value of 100. A high GI means a quick, larger spike in blood glucose, while a low GI means a slower, more gradual rise. This measure applies specifically to carbohydrate-containing foods, not vitamins, fats, or protein quality. Using GI helps you choose foods that promote steadier energy and better blood sugar control.