with consuming coffee, you will not achieve the full detoxifying properties of the diet this way. Our staff has found that the carbonation and artificial sweeteners in diet sodas created feelings of hunger and they did much better on the diet without diet soda. Most people get too much sodium and it causes edema. It is not necessary to completely forgo sodium as it is hard to find a ready made broth without sodium. But it is better if you can limit the intake of sodium during the fast.