The Role of Vitamins and Minerals in Hypothyroidism
Vitamin B12 is a very important vitamin and can cause various symptoms similar to those of hypothyroidism, one of which is tiredness. Vitamin B12 deficiency can be caused by pernicious anaemia, an autoimmune condition.
Iron and ferritin are extremely important to the thyroid as it needs iron to make thyroid hormone. You should always check that you have optimum levels.