Our expert says:
I must admit that I have not heard that freezing bread lowers the GI. I can also not see that freezing which does not really change the starch content of bread, would affect the GI. What does lower the GI of a meal containing high-GI breads (white, brown and wholewheat), is to have a small amount of polyunsaturated margarine and fat-free cottage cheese with the bread. You can also buy low-GI breads in most supermarkets. The GI of this type of bread has been lowered by adding soy protein, nuts, seeds, etc. You can contact the Glycemic Index Foundation of SA at: www.gifoundation.com and ask if freezing bread does have an effect on the GI.
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