Which mineral is found in every human cell and is a cofactor for more than 200 enzymes?

Zinc is indeed a mineral that is present in every human cell and serves as a critical cofactor for over 200 enzymes involved in numerous biological processes. These enzymes play essential roles in various functions such as metabolism, immune response, DNA synthesis, and protein synthesis. Zinc is also significant for the structural integrity of proteins and in the regulation of gene expression.

Due to its prevalence in cells and involvement in various physiological functions, zinc is vital for growth and development, wound healing, and maintaining a strong immune system. The body's requirement for zinc as a cofactor highlights its importance in maintaining overall health and the implications of zinc deficiency, which can lead to a weakened immune response and other health issues.

In contrast, while calcium, iron, and magnesium are also important minerals in the body, they do not fulfill the same extensive role as zinc in this context. Calcium is primarily important for bone health and muscle function, iron is mainly known for its role in oxygen transport in the blood, and magnesium serves various functions including muscle function and energy production, but none meet the criterion of being present in every human cell and acting as a cofactor for as many enzymes as zinc does.