IRCT201112182365N4 IRCT 2012-05-02 Tehran University of Medical Sciences Effects of Single and Combined Zinc & Selenium Supplementation on Anthropometric measurments, metabolic rate & Thyroid Hormone Concentrations in Hypothyroid Overweight or Obese Patients. Zinc & Selenium & Hypothyroidism Effects of Single and Combined Zinc & Selenium Supplementation on Anthropometric measurments, metabolic rate & Thyroid Hormone Concentrations in Hypothyroid Overweight or Obese Patients. 2011-10-23 anticipated 68 Complete https://irct.ir/trial/2013 interventional Randomization: Randomized, Blinding: Double blinded, Placebo: Used, Assignment: Parallel, Purpose: Supportive. N/A Hypothyroidism. Intervention 1: Dietary Zinc supplement, 30 mg/d and dietary Selenium supplement 200 µg/d for 12 weeks. Intervention 2: Placebo, the same as zinc tablet as the active supplement with the same size, daily for 12 weeks and Placebo, the same as selenium tablet as the active supplement with the same size, daily for 12 weeks. Intervention 3: Dietary Zinc supplement, 30 mg, daily for 12 weeks , and Placebo, the same as selenium tablet as the active supplement with the same size, daily for 12 weeks. Intervention 4: Dietary selenium supplement, 200 µg, daily for 12 weeks , and Placebo, the same as zinc tablet as the active supplement with the same size, daily for 12 weeks.