So the body is craving for salt, or craving for impurities? Feed it the one it needs. If the body needs impurity x, which is tastily packaged with salt product

So the body is craving for salt, or craving for impurities? Feed it the one it needs. If the body needs impurity x, which is tastily packaged with salt product y, advising to eat y seems like the sort of behaviour the OP is trying to avoid.