Hyperthyroidism: Symptoms, Causes and Support Strategies Graves' disease happens when something triggers your immune system to overproduce an antibody called thyroid stimulating immunoglobulin (TSI). TSI attaches to healthy thyroid cells, causing your thyroid to overproduce thyroid hormones. Graves' disease Graves' disease is more than an overactive thyroidit can impact your vision, energy, sleep, and more. Learn the symptoms, causes, and treatment options so you can better understand what's happening and what Minerals for Treating Hyperthyroidism Naturally Functional Fueling Nutrition PDF) The effect of hyperthyroidism on glutathione peroxidase activity and selenium level in Iraq patients