Diabetes and diet tip 1: Choose high-fiber, slow-release carbohydrates. Carbohydrates have a big impact on your blood sugar levels more so than fats and proteins but you don't have to avoid them. You just need to be smart about what types of carbs you eat. In general, it's best to limit highly refined carbohydrates like white bread, pasta, and rice, as well as soda, candy, and snack foods. Focus instead on high-fiber complex carbohydrates also known as slow-release carbs. Slow-release carbs help keep blood sugar levels even