Re: vitamin D?

You mean this terraine?

Mercury
http://www.tuberose.com/Mercury.html


or the +20 tons of Mercury dumped into the food supply by chlor-alkali plants every year:
//www.curezone.org/forums/fm.asp?i=1889346#i


or maybe this one:
Approximately 75 tons of mercury are present in the coal used by US coal-fired power plants every year. Of this, more than 50 tons are subsequently released into the atmosphere, while the rest remains in coal combustion wastes.
http://groundtruthtrekking.org/Issues/AlaskaCoal/CoalMercury.html