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Four tests â thyroid-stimulating hormone (TSH), Free T3, Free T4 and thyroid antibodies â are required to accurately assess the function of the thyroid gland, our master gland of metabolism. An optimal TSH level should be less than 2.0, not the currently accepted 4.7 reported by most labs.
FastFeatures. The thyroid is largely responsible for the body's metabolism that allows cells to create energy from food. Thyroid disease can cause the thyroid to malfunction. In addition to medical treatments, there are vitamins and supplements that may support thyroid health.rint |. A A. The thyroid is largely responsible for the body's metabolism that allows cells to create energy from food. Thyroid hormones also assist in the regulation of body temperature, blood pressure, heart rate, and the functioning of vital organs such as the liver and brain.