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Yes, you read that headline right. Splenda has a higher glycemic index than table sugar does! I was floored when I found this out.
Table sugar has a glycemic index of 65, while Splenda has a glycemic index of 80! That’s because not only does Splenda contain Sucralose (who’s GI is technically 0), but it also includes dextrose and maltodextrin.
Dextrose has a glycemic index of 100, while maltodextrin has a glycemic index of 110.
All these are aside from the fact that sucralose is an artificial sweetener, and has a number of possible health effects that makes many people want to avoid it.
What originally alerted me to this fact was this post on Pinterest.
For a comparison of different types of sweeteners have a look here.