Glycemic Index (GI) is a measure of how much a carbohydrate-containing food is likely to raise your blood sugar. A food with a high GI will raise blood sugar more than a food with a low GI. The lower the GI the better. Choosing foods with a low GI is generally considered wise for overall health and diabetic control.

But …
Choosing foods with a low GI is NOT a panacea. Here is why:

  • Some foods with a low GI are high in fat and sugar eg chocolate. They add little to the nutritional value of your diet.
  • Most foods with a low GI are high in fibre. That’s good. But some foods high in fibre and other nutrients eg potato and bran flakes have a high GI. There is no need to avoid these.
  • Portion sizes still count. So … overindulging in foods with a low GI will still raise your blood sugar.
  • The GI reflects the effect of a food on your blood sugar when it is eaten alone. When eaten in a mixed meal, the presence of fat and protein may negate the effect on blood sugar.

Tips to make the GI work for you:
  • Choose whole grain, pumpernickel and oat bran bread more often than white bread
  • Choose All Bran™ cereal and oatmeal rather than rice krispies and cornflakes
  • Eat fresh fruit and vegetables – they have a low GI
  • Consume low fat milk products – they have a low GI
  • Choose parboiled or brown rice more often than instant rice
  • Eat baked potatoes more often than mashed, boiled or instant potatoes
  • Add beans, peas and lentils (legumes) to your chili, soups and salads

HIGH GI foods(choose less often)
Food Glycemic index
Instant rice 124
Corn Flakes™ 119
Rice Krispies™ 117
Jellybeans 114
French fries 107
Soda crackers 106
Potato (boiled/mashed) 104
White bread 100
Melba toast 100
Couscous 93
Oatmeal (one minute oats) 87
Digestive cookies 84
Table sugar (sucrose) 83


LOW GI foods (choose more often)
Food Glycemic index
Popcorn 58
Oat bran bread 68
Oatmeal (slow cook oats) 70
Parboiled rice 68
Pumpernickel 66
All-Bran™ 60
Sweet potato 54
Skim milk 46
Pasta 40 to 70
Lentils/kidney/baked beans 40 to 69
Apple/banana/plum 34 to 69