I have to say that kelp never helped me as I had been taking powedered kelp daily until three years ago when my thyroid stopped working and had to take thyroid hormone. My problem was mercury from mercury fillings. After I did a detox, the thyroid started to work last October. I have read that mercury displaces iodine and that it may destroy the thyroid cell membranes. Now, my problem is that I am kind of hyper and have to stay away from kelp and iodized salt. Maybe your body stores iodine for a long time as I went three years with taking thyroid hormone. I have to eat cabbage two-three times day to suppress my thyroid. The only problem I have is that I can't sleep if my body temperature rises above 98.4. It's not as easy at it seems adn apparently there is no one glove size fits all.