Diabetes mellitus is an ailment that requires serious medication and proper diabetic nutrition as well. However, as this is an exceptional case, certain special considerations are extremely needed in order to maintain sustainable improvement in the patient?s condition. Broadly, there are two types of diabetes mellitus, known as type 1 and type 2 diabetes. For both of them, although different in nature, diabetic nutrition is highly required. In this connection, certain basic objectives are the key factors of these diets. Accordingly, when we discuss the nature of diabetic nutrition, we should also concentrate on these key factors in order to understand the basic requirements of such type of specified diabetic nutrition.