Try to avoid foods that have a high glycemic index rating. These foods include white breads, some pastas, potatoes, sweetened cereals, candy bars, soda pop, honey, and table sugar. These foods give you a quick burst of energy but then they leave you feeling hungry and lethargic a short time later. Recommended foods would be those with a low glycemic index rating, such as fruits, vegetables and whole grains. These foods leave you feeling full and raise blood sugar levels slowly and steadily.