Background: The immunomodulatory role of 1. 25-Dihydroxy vitamin D3 (1. 25(OH)2D3) is exerted through its interaction with the vitamin D receptor (VDR) present on pancreatic and immune cells. While a deficiency in vitamin D has been linked to Type 1 Diabetes Mellitus (T1DM). https://www.truvisionhealthftp.com/