If the link doesn't work type flechas and interview and the posting is titled Flechas: Questions and Answers by Maniek. There is a lot of other good info in there. His take on Hashimoto's is that although antibodies are not affected by Iodine supplementation they are also not resolved by iodine. He states it is a methylation problem and that supplementing with methyl donors ie. trimethyglycine is what has been shown to reduce antibodies in his clinical experience.
3. Does taking thyroid hormones affect Iodine absorption?
Flechas: Yes. They have known that for 50 years. That is why radiologists require people to stop their thyroid hormone before RAI. There were studies in 1979 that measured Iodine in the thyroid. Let's say it was equal to 9. Then, the people were on thyroid hormones for two months, and the iodine in the thyroid measured 2. (I'll send you the reference. Abraham would have the current references on how iodine affects the NIS.)
Women take iodine for FBD and get high TSH. Their endocrinologist increases their thyroid hormone and the FBD comes back within a week or two.
Thyroid hormone inhibits the NIS. Excess thyroid hormone heats up the body and robs the body of the ATP by making heat energy. Thus, there is not enough ATP to operate the NIS. [Zoe: This doesn't make sense to me. Yes, the TH makes more ATP and ATP is the energy that runs the NIS. However, the heat comes as a side effect of the ATP increasing the various activities of the cell; it is not just creating heat for the sake of creating heat.]
The thyroid hormone also inhibits iodine absorption by the breast.
Iodine also increases the sensitivity of the thyroid hormone receptors. Once the receptors become saturated with iodine, it is possible to decrease the thyroid hormone. (Gave personal story of how he used to take Synthroid, but was able to eliminate it after supplementing with iodine.)