The glycemic index (GI) is a scale that ranks a carbohydrate-containing food or drink by how much it raises blood sugar levels after it is eaten or drank. Foods with a high GI increase blood sugar higher and faster than foods with a low GI.

Green = Go
Low GI (55 or less) Choose Most Often
Yellow = Caution
Medium GI (56 to 69) Choose Less Often
Red = Stop and think
High GI (70 or more) Choose Least Often
Foods in the high GI category can be swapped with foods in the medium and/or low GI category to lower GI.

For more Details refer to the white paper attached.

Glycemic Index Food Guide – white Paper