Rock salt is a natural salt which is not processed. It is superior to table salt because of presence of high quantity of minerals and also lack of chemicals and additives. It is coarse to touch and also does not mix in food easily as table salt. Rock salt stimulates digestion and also improves appetite. It improves bowl functioning and reduces acidity. It is also used for curing various respiratory disorders. Ailments like allergies, asthma,and common cold can be treated effectively with rock salt. Rock salt contains many minerals that are essential for the body. These minerals increase the immune system. It contains iron, magnesium, copper and, calcium that are essential for many organs of the body.