The glycemic index, theoretically, should be determined individually for each as a result of a blood test after eating a particular product. As a result of years of research there has been established averaged glycemic index, similar to the real ones. Medium glycemic index = 56 - 69. Products of medium glycemic index include, among others pineapple, watermelon, biscuits, wholemeal rye bread, refined sugar, semolina and others.