Modern nutrition that includes carbohydrates and protein and fats is really just one source of nourishment which we call SECONDARY FOOD. If we are not physically starving, then other dimensions of the human experience are generally much more important to us than what we put into our mouth.
One of the reasons we see so much diet-related disorders such as heart disease, cancer, obesity, high blood pressure and diabetes, is because we are stuffing ourselves with SECONDARY foods when we are really starving for PRIMARY FOODS.