Salt

Ordinary table salt undergoes a great deal of processing. It is approximately 97.5 percent sodium chloride and 2.5 percent chemicals, such as iodine and moisture absorbents, dried at over 1,200 degrees Fahrenheit.
This high heat alters the natural chemical structure of the salt. By contrast, unrefined natural salt, such as Himalayan salt, is 84 percent sodium chloride and 16 percent other naturally occurring minerals, including many trace minerals like silicon, phosphorous and vanadium.