We do have salty blood same as a fish. As long as a salt is natural and we have enough potassium to balance it and our kidneys are working I do not have a problem with this.
If the kidneys are poor, all your salt will come up and out as mucus from the nose or lungs. When you cough up or have mucus run down the nose, take a small taste and see if it is not very salty.
Otherwise most diseases have their roots in our bodies having too much inorganic salt and not enough potassium, balance these 2 and there is no disease.