Does anyone on here have a thyroid that doesnt behave and go both ways like me???? Endo suggests iodene treatment, im concerned what it will do to my Pernicious Anemia conditions and b12 levels. im thinking seriously about cancelling treatment. I have read on numerous occasions it can cause leukimia,with an already compromised immune system ,i dont know where to turn. All the symptoms i have can fall into thyroid issues or p.a. which belongs to which i dont know. The biggest fear is having treatment and still feeling poo. Endo has only treated 3 people like me in 20yr career, he cant tell me much of result at end.