Glycemic Index

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The glycemic index (GI) is a scale, ranging from 0 and 100. Foods with a higher GI number are digested and absorbed faster and lead to higher blood sugar values.

It is best to pick foods with lower GI values.

Lower means under 55.

High means over 70.

Sometimes different groups come up with different GI numbers. There are some examples below.

Low GI food (0-54)
Recommended

Breads:
Heavy Mixed Grain Breads
Whole grain
Tortilla
Pumpernickel bread

Cereal & Grains:
Oats (Steel Cut)
Oat Bran
All-Bran Original
Rice (Converted, Parboiled)
Barley
Buckwheat
Kasha
Bulgar
Quinoa

Milk products:
Yoghurt
Milk
Soy milk

Plant-based proteins:
Sweet potato/yam
Chickpeas
Kidney beans
Soy beans (Edamame)
Baked beans
Lentils

Fruits:
Apple
Banana
Grapefruit
Kiwi fruit
Orange
Peach
Pear

Medium GI food (55-69)
Recommended

Breads:
Whole grain bread
Rye bread
Pita bread

Cereal & Grains:
Cream of wheat
Instant Oats
Puffed Wheat
Basmati Rice
Brown Rice
Cornmeal
Couscous


Vegetables:
Corn
Popcorn

Fruits:
Sultanas raisins
Raw and canned apricots
Mango
Paw paw
Pineapple
Rockmelon

Other foods:
Honey

High GI food (70-100)
Not Recommended

Breads:
Kaiser roll
Mantou (Chinese steamed buns)
White bread
White bagel

Cereals & Grains:
Bran Flakes
Corn Flakes
Rice Krispies™
Instant Cream of wheat.
Sticky Rice
White Rice (Instant)
Millet

Milk products:
Rice milk

Vegetables:
White potatoes
Instant mashed potatoes
French fries

Fruits:
Watermelon
Banana (overripe)
Lychee
Dried dates

Other foods:
Table sugar
Corn syrup

To reduce fluctuations in your blood sugar levels, non-starchy vegetables such as leafy greens (examples: lettuce, spinach, kale and chard) and cruciferous vegetables (examples: cabbage, cauliflower, Brussel sprouts and broccoli) have low GI values and very little impact on blood sugar levels. On the other hand, some starchy vegetables like potatoes have a higher GI and this could be considered in making food choices. Remember that the starchy foods (starchy vegetables, rice, bread,  etc,) should make no more than a quarter of what you eat at a meal. Pulses like beans and lentils, basmati rice and whole grains are nourishing lower GI foods, and are preferred over starchy vegetables, white rice and refined grains. On the other hand, leafy greens and cruciferous vegetables can be half of what you eat.

Fruits, depending on their types, generally have a low to medium GI rating. They are best consumed as ‘dessert’ after a meal or in combination with a protein source (link to snack information). This lowers their ‘glycemic load’ because the protein slows down digestion.

More Glycemic Index Tips

  • Consume a variety of foods at every meal. Eating large amount of carbohydrates, even if low GI foods, can still make blood sugar levels too high, so you still need follow healthy plate proportion principles.
  • Limit use of processed foods. More processed products usually have higher GIs.
  • Avoid over-cooking: usually the more a starchy food is cooked, the more it breaks down easily into glucose, raising blood sugar more quickly.
  • Pasta cooked al dente (firm) have a lower GI than soft cooked pasta
  • Medium cooked carrots have lower GI than fully cooked carrots.
  • Although fruits and yogurt are simple carbohydrates, when consumed as part of the meal they are digested more slowly preventing rapid spikes in your blood sugar levels.
  • Make “smart” carbohydrate choices by choosing low GI foods as part of your meals and snacks to allow you to better control your blood sugar levels.

 

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