The glycemic index of grits is typically listed as being high on the glycemic index list. The glycemic index is based on a ranking system of carbohydrate foods based on how they affect an individual's blood sugar. Foods with carbohydrates are assigned a number between 0 and 100 based on that effect. Foods that have a glycemic index of more than 70 are considered to be high, foods with a glycemic index between 55 and 70 are moderate, and foods with a glycemic index below 55 are low. At this time there are few resources that meet our quality standards on the glycemic index of grits.