Your Hashimoto's created by infections & overgrowths inside your small intestine.
The reason why I know this is because I've helped hundreds of people with thyroid issues and other autoimmune and digestive symptoms - and they found that they no longer needed their thyroid medication.
I believe these thyroid issues are created from the inflammation in your small intestines. When you have these infections & overgrowths inside your small intestine, they actually create gaps between your intestinal cells.
Then, undigested food particles and other wastes can pass through into the blood that creates an immune response inside your blood. Then, you have inflamed blood supplying your thyroid - knocking it out of balance.
There've also bees studies showing the correlation between thyroid issues and infections in your small intestines.
When we get rid of the infections, no more thyroid issues.