The immune system is strongly influenced by the intake of nutrients.Several cells of the immune system can indeed accumulate vitamin C and need the vitamin to perform their task, especially phagocytes and t-cells. Thus a vitamin C deficiency results in a reduced resistance against certain pathogens whilst a higher supply enhances several immune system parameters. Vitamin D has important functions beyond those of calcium and bone homeostasis which include modulation of the innate and adaptive immune responses. Vitamin D deficiency is prevalent in autoimmune disease. Zinc is an essential mineral that our body cannot make itself. This means we have to obtain it from our diet or supplements. Zinc is known to play a central role in the immune system, and Studies have shown people who are deficient in zinc are more susceptible to infection. Zinc also functions as an antioxidant.