Sometime back, during discussions on this forum and my online reading, there was a mention about Gluten being one of the possible causes of Hashimotos. As I had tried a lot of things and nothing was working for me, I went
gluten free. I know some people vouch for it but frankly, I did not see any change at all due to this.
So, the root cause of Thyroid Antibodies is due to diet, an inherent issue in the immune system or some changes in thyroid gland that is triggering is not certain.