Iodine DeficiencyIODINE DEFICIENCY: 2 BILLION PEOPLE TO SUPPORT
Iodine is an essential element for living animals and the human diet but nowadays is hardly present in the Earth’s crust. Over hundreds of millions of years the iodine that was present has been leached out of the soil by floods and melted glaciers that carried it back to the sea which in turn has become progressively enriched with this element.