Zinc plays a vital role in the immune system by supporting various immune functions, including cell division, immune cell activation, and the production of antibodies. It is essential for the development and function of neutrophils and lymphocytes, crucial components of the innate and adaptive immune responses. Zinc also has antioxidant properties, helping to reduce oxidative stress in the body, which can enhance immunity. A deficiency in zinc can lead to increased susceptibility to infections and decreased effectiveness of vaccines, underlining the importance of adequate zinc intake for maintaining a robust immune system.