Answer
Foods that produce a great amount of glucose on digestion are said to have a high glycemic index; low glycemic index foods produce comparatively lower amounts of glucose on digestion--mass for mass. It is advisable that, as far as possible, diabetics include in their diets mainly foods of low or medium glycemic indexes.
Work Step by Step
Foods with a glycemic index of <55 are considered of low glycemic index. Examples include apples, lentils, apricots carrots, kidney beans.
Foods with a glycemic index of 56-69 are foods of medium glycemic index (cantaloupes, cherries., sweet potatoes, bagels).
Foods with glycemic indexes over 70 are of high glycemic index and should be avoided by the diabetic --watermelons, cherries, corn flakes, graham crackers etc.
People with Type 2 diabetes should avoid calorie dense foods as much as possible, because such food items promote obesity, which is an important concern of the Type 2 diabetic.