Minerals are essential, but depleted in most people, probably because of today's over-fertilized, over-pesticized farming. Since heavy metals (“bad minerals”), such as mercury, lead, cadmium, etc., are more prevalent in our society than ever before, it is believed that the intake of “good minerals” will help remove those toxins (“bad minerals”).
One mineral can, and will, displace another with the same ionic value. By taking good minerals, we help displace bad minerals & mobilize them out of the body. It's a double nutritional hit: adding needed minerals and detoxing at the same time.