National Institute of Health (NIH) states that Vitamin D is considered a fat-soluble prohormone which is involved in many aspects of our wellbeing and regulatory functions just like a hormone. Everyone is aware that calcium absorption and bone health are major part of vitamin D benefits. However, most people may not know that Vitamin D is also involved in control of inflammation and immune response. Research has shown that vitamin D can interact with immune cells, affect genes that regulate inflammation, and alter the response of the immune system.