Step 3How to choose the best foods
For a more nuanced approach, you can check out the glycemic index and glycemic load of various foods. The glycemic index is a ranking of carbohydrates on how they effect your blood-sugar levels, i.e. how readily your body converts the components of a certain type of food to glucose. The glycemic load takes into account the type of carbohydrate in addition to how much is in a standard portion of various foods. If you're going to refer to just one measurement, go for glycemic load as it is a better measurement of your body's actual response. The University of Sydney has a glycemic index and load database you can use to check out your favorite foods. Here's a sample of some foods:
Food - Glycemic load
Apple - 5.9
Banana - 10
Broccoli - 0
Brown rice - 31.5
Cola - 17
Pizza (range) - 5-28
Booklets with this information are available, but when you're getting food it's much easier to simply remember to eat fresh fruits, fresh vegetables, lean meats, and seafood and to avoid basing your diet on anything that comes in a cardboard box. I've also heard it said this way: shop only from the edges of the supermarket -- the center isn't good for you.
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