so8, as I understand it, Hashimoto's is a disease where there's inflammation of the thyroid gland - thought to be caused by an overactive immune system - I guess the question is, what is causing the immune system to over-react?
Jim has stated that there is a use MMS for inflammation that might be caused by pathogens - even where pathogens are not normally suspected, such as in diabetes caused by an inflammation of the pancreas. So, it's entirely possible that MMS will help your Hashimoto's - dependent on the cause of the inflammation.
Good luck!