Himalayan crystal rock salt contains 84 of the 92 trace minerals known to man, and no other natural or man-made salt has this many minerals. In addition, the salt contains the minerals in the same proportions as the human body does. As well as the vital minerals such as calcium and magnesium, Himalayan crystal rock salt has the other necessary minerals. Many minerals need other trace minerals in order to work so it is vital to have the correct variety of minerals as well as the correct proportions for the minerals to work in the body, and Himalayan crystal rock salt contains these.