Zinc's primary function in the human body includes supporting immune function, facilitating wound healing, and aiding in protein synthesis. It plays a crucial role in cell division and the metabolism of carbohydrates, fats, and proteins. Zinc is also important for maintaining skin health and supporting cognitive function. Deficiencies may lead to symptoms such as hair loss, delayed healing, and a weakened immune response. A balanced diet rich in zinc, including foods like meat, shellfish, legumes, and nuts, is essential for optimal health.