Zinc deficiency occurs when the body does not get enough zinc, an essential mineral important for various bodily functions. It can lead to symptoms such as weakened immune response, hair loss, and delayed wound healing. People at higher risk include those with poor diets, certain medical conditions, or absorption issues. This deficiency can be diagnosed through blood tests and is often treated with dietary changes or supplements. Foods rich in zinc include meat, shellfish, legumes, seeds, nuts, dairy, and whole grains. Addressing zinc deficiency is crucial for maintaining overall health and well-being.