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Hi Bonnie, I will be checking out that website! There are many medical sites that say invironmental factors may be involved in autoimmune thyroid diseases. Some state they believe some types of infections can go into the thyroid gland and that this is what the antibodies are attacking and not actually the gland itself (many theories out there)!
Dr.s are still trying to find the causes of A.I. diseases, I hope they accomplish this soon!