The glycemic index ranks foods on how they affect our blood sugar levels. This index measures how much your blood sugar increases in the two or three hours after eating. The glycemic index is about foods high in carbohydrates, and rates them by ow quickly they’re converted into glucose, which is the form of sugar that is found in your blood.Foods high in fat or protein don’t cause your blood sugar level to rise much. A lot of people still think that it is plain table sugar that people need to avoid. The experts used to say that, but the glycemic index shows that even complex carbohydrates, like baked potatoes, can be even worse. When you make use of the glycemic index to prepare healthy meals, it helps to keep your blood sugar levels under control. This is especially important for athletes and people who are overweight also stand to benefit from knowing about this relatively new concept in good nutrition.