What is the primary function of the glycemic index?

The glycemic index is designed to assess the rate at which carbohydrates in food affect blood glucose levels. Specifically, it ranks foods based on how quickly they raise blood sugar after consumption. Foods with a high glycemic index cause a rapid increase in blood glucose, while those with a low glycemic index result in a slower, more gradual rise. This is particularly important for individuals managing conditions such as diabetes, as it helps inform dietary choices that maintain more stable blood sugar levels throughout the day. By understanding the glycemic index, individuals can better select carbohydrates that align with their health goals and energy needs.