What role does zinc play in the body?

Zinc plays several critical roles in the body, with one of its primary functions being related to immune function. It is essential for the development and activation of T-lymphocytes, which are a type of white blood cell pivotal in the immune response. Adequate levels of zinc are crucial for maintaining the integrity of the immune system and ensuring the body can effectively respond to pathogens.

While zinc does contribute to protein metabolism as well, its more prominent and widely recognized role relates to supporting the immune system. This includes enhancing the body's defense mechanisms and modulating inflammation. Individuals with zinc deficiency often experience impaired immune function, which can lead to increased susceptibility to infections.

In terms of the other options, bone mineralization primarily involves calcium and phosphorus, vision enhancement is more closely associated with vitamins such as A and C, and while protein metabolism involves various micronutrients, zinc is specifically critical for immune response and cellular function. Overall, zinc's importance in immune function makes it a vital nutrient for overall health and well-being.