Re: What happens if one stops taking iodine in the long run?

I think you got good answers already, but just to add another one, I will quote Dr Shevin

"If, on supplemental iodine, there are positive changes in well-being, the dose that maintains that improvement is probably in the 1/2 to 1 tablet daily range, and after several months on Iodine supplementation, most people would maintain that improvement for months to years even if they stopped supplementation;"

http://www.drshevin.com/patient_education/nutrition_hygiene/iodine_deficiency/