Salt has been an essential part of civilization since as far back as 6000 B.C. It has been the subject of stories, fables and fairy tales, served as currency and has been the focal point of warfare. In the human body, salt is needed for numerous functions from blood sugar regulation to nerve communication to bone density to circulatory health. If that weren't enough, salt tastes great. Humans have an innate craving for salt and it is an integral part of food seasoning. No pantry is complete...