Too many minerals wont really mean anything, for example i drink clay that is very colored and has lots of minerals and trace.....they have tested those and clay have not poison people...in think it is the opposite , clay detox metallic form of minerals out....
I think the body knows what to use and what not when the minerals are in right ionic state....
It`s a different story if there is something else man made poison in Sea Salt ...which is today possible with all chem trails and other pollution.