The Thyroid gland is an organ located in front of your neck & release hormones that control your metabolism, breathing, heart rate, nervous system, weight, body temperature & many other functions in the body. When the Thyroid gland is overactive, the body's processes speed up & you may experience nervousness, anxiety, rapid heartbeat, hand tremor, excessive sweating, weight loss, sleep problem etc. Causes: When thyroid gland makes too much T3 & T4, it is defined as HYPERTHYROIDISM. The most common cause of Hyperthyroidism is Autoimmune disorder Graves' disease. In this disorder, the body makes an antibody ( a protein produced by the body to protect against a virus or bacteria) called thyroid- stimulating immunoglobulin (TSI) that causes the thyroid gland to make too much thyroid hormone. It is a genetical disorder. Toxic nodular or multinodular goiter, which are lumps or nodules in the thyroid glands that cause the thyroid to produce excessive amounts of thyroid hormones. Inflammation of the thyroid gland (Thyroiditis), resulting from a virus or a problem with the immune system may temporarily cause symptoms of Hyperthyroidism. Consumption of too much Iodine may cause the Thyroid gland to overproduce thyroid hormones. Read more here>>> http://www.teambuildingafyakenya.com/2016/04/hyperthyroidism.html