Keep in mind that food does not act in isolation. The actual glycemic index of the food you eat depends on the combination of food. So if you eat a combinatio

Keep in mind that food does not act in isolation. The actual glycemic index of the food you eat depends on the combination of food. So if you eat a combination of carbohydrates, fats and proteins it lowers the glycemic index. Famously, a Snicker's bar has a dramatically lower glycemic index than a slice of bread (though exactly what it is depends on what study you look at :-P ). Another way to look at this is that refined sugar is the sugar with all the other things that would have lowered the glycemic index taken away. If you add it back, the index will be lowered again. If I eat refined sugar from sugar beets and accompany it with the fiber, etc from the processing, the glycemic index will be the same as eating sugar beets. So it doesn't matter where the carbs are coming from, it only matters if you are mixing it with fibre, fat and protein.