Recently did a few of the things mentioned in the not to do list of this article and ended up with a white tongue that does not go away neither with anti fungals nor antibiotics . Seems I have serious sulfation problem.
http://livingnetwork.co.za/chelationnetwork/food/high-sulfur-sulphur-food-list/
http://livingnetwork.co.za/chelationnetwork/food/high-sulfur-sulphur-food-list/