Main symptoms of diabetes include excess thirst, hunger and incresaed frequency of urination. Other symptoms can include blurry vision, numbness. You need to have a balanced diet. Go by the glycemic index, if the carbohydrate content is more in any food then avoid it or have it in minimal amounts. Otherwise follow the normal guidelines of Low Fat, Low Sugar, Low Salt, Plenty of Fruit and Vegetables, and Plenty of Complex Carbohydrates (wholemeal bread, potatoes, grains, beans, peas, and other starchy foods.