It's common knowledge that consuming foods that contain large amounts of sugar may cause your blood sugar to spike. But did you know other types of carbohydrates may have the same effect on blood sugar? At Atkins, we call this the "Hidden Sugar Effect". For example - a medium sized bagel has the same impact on blood sugar as 8 teaspoons of sugar. An Atkins Chocolate Peanut Butter Bar has the same impact as 1.5 teaspoons of sugar.