Its not just SUGAR content--you need to watch the CARBOHYDRATES that you eat. Read the labels on your food, and never eat more than 30 milligrams of carbohydrate in any meal!
Nearly all foods have them, so be very careful of portion sizes. One cup of noodles is 30 mg of carbs--if you add a couple pieces of bread and a potato or some corn, thats probably 75 gms!!
Eat more low-carb foods, like green beans, lettuce, carrots, celery, cucumbers, and beets.
Get a good book on carb counting, too, and learn how to eat more healthy.