Graves disease is an autoimmune form of hyperthyroidism in which the body is creating antibodies to itself. There are absolutely natural treatments for both autoimmune disease overall and Graves disease specifically.
There are some herbs such as Bugleweed (http://www.wyldeabouthealth.com/healthnotes/us/assets/nutritional-supplement/bugleweed/how-it-works
) and Lemon balm (http://www.wyldeabouthealth.com/healthnotes/us/assets/nutritional-supplement/lemon-balm/how-it-works
) that can be used to reduce the autoimmune process short-term and reduce symptoms.
Long-term, it is important to support and regulate the immune system so that it does not continue to make this over-reaction to your own body. This requires personalized treatment via diet, lifestyle, and other modalities such as homeopathy and/or acupuncture. For example, gluten sensitivity can be a contributor to autoimmune thyroid disease in many people. Identifying and treating the underlying issues so that your body can heal is key. See a naturopathic doctor for long-term healing that is right for your situation.
Kate Whimster, ND