They don't affect blood sugar. And artificial sweeteners don't count as a food in your meal plan. Well, some people just don't like the taste. Some people also wonder whether they might harm your body if you eat tons of them, because they are an artificial substance. If you're concerned about that, ask your mom and dad or doctor or nurse for advice about including artificial sweeteners in your diet.
Sugar is a carbohydrate.
If the food in the package contains sugar, it will be listed under Total Carbohydrate in the Nutrition Facts.