If you've been diagnosed with Graves' disease, you may be wondering about treatment options. The three main approaches for treating hyperthyroidism are antithyroid medications, radioactive iodine therapy, and thyroidectomy (surgery). Each option Graves' Disease: This Eerie Sounding Thyroid Disease Isn't as Deadly as it Sounds The Wellness Way Are these Supplements Hurting your Thyroid? Carnitine Deficiency: What Is It, Causes, Symptoms, and More Osmosis The most common cause of hypothyroidism worldwide is insufficient intake of iodine, a mineral found in iodized salt and some foods (such as seafood and dairy) that is needed for production of How Does Carnitine Support Hashimoto's? Dr. Izabella Wentz