Gluten is the most common cause of thyroid dysfunction
Gluten and food sensitivities are among the most common causes of thyroid dysfunction because they cause inflammation.
Gluten causes autoimmune responses in many people and can be responsible for Hashimoto's thyroiditis, a common autoimmune thyroid condition. Approximately 30 percent of the people with Hashimoto's thyroiditis have an autoimmune reaction to gluten, and it usually goes unrecognized.
How this works is, gluten can cause your gastrointestinal system to malfunction, so foods you eat aren't completely digested (aka Leaky Gut Syndrome7 ). These food particles can then be absorbed into your bloodstream where your body misidentifies them as antigens -- substances that shouldn't be there -- our body then produces antibodies against them.
These antigens are similar to molecules in your thyroid gland. So your body accidentally attacks your thyroid. This is known as an autoimmune reaction or one in which your body actually attacks itself.