Salt mainly consists of sodium chloride and it is a basic ingredient in human diet. In the market, it is found mixed mainly with potassium iodite, which is also necessary in our diet. The salt which comes from the sea is better than rock salt. It helps digestion, it is appetizing, it contributes to the secretion of gastric juice, it prevents constipation and it helps the metabolism of proteins. It also prevents the growth of microorganisms, that’s why it is used for food preservation. Overconsumption though, can cause hypertension, ulcer, indigestion and kidney disorders.