the elemental form IS the form used to treat and prevent specific disease. it IS a chemical and it is NOT natural. but then neither is anything else in our environment, and that is the problem. it just so happens in this case that the body can tolerate and use it as I2 so it works as a nutrient and a medicine.
i have always said that everyone should do elemental at first if they can/are willing. if not, there is KI.