Hyperthyroidism is a thyroid disorder most commonly due to Graves' disease, a multifactorial autoimmune disorder. Vitamin D is known to have an immunomodulatory function through the Vitamin D Receptor (VDR), which plays a role in both the innate and adaptive immune system. This suggests that vitamin D may influence the immune response in Graves' disease. Autoantibodies in Graves' disease, known…