The research studies found high prevalence of thyroid dysfunction, anemia and iron deficiency significant association between iron status and thyroid function. Thus, anemia and iron deficiency seems to be associated with thyroid dysfunction particularly hypothyroidism.
Zinc is connected to thyroid function in more than one way. When zinc levels are low zinc, TSH is not created, which results in low levels of thyroid hormones T4 and T3.
Zinc is also an essential part of the enzyme deiodinase, which converts T4 into functional T3.
Low zinc levels are associated with increased levels of autoimmunity—as seen through high amounts of anti-thyroid antibodies (TPO and Tg) in thyroid patients