When we talk about the glycaemic index we are talking about carbohydrates, that’s foods such as pasta, rice bread, cereal and potatoes, although carbohydrate is also found in all fruits and vegetables and in other foods. Each food is given a rating on a scale of 1-100, and the lower the rating, the better. The highest ranking food is Glucose at 100. Anything with a rating above 70 is considered high GI, a rating between 55-70 is medium GI and below 55 is a low GI. Higher the fibre content the lower the GI ranking is likely to be. Focusing on foods that that provide slow, steady amounts of energy throughout the day helps control blood sugar levels.