Selenium is a trace element critical for maintaining proper health. It is an essential component of various enzymes and proteins, particularly selenoproteins, which play a significant role in antioxidant defense, thyroid hormone metabolism, and immune function. The human body cannot manufacture selenium; therefore, it must be obtained through diet or supplements. Despite its importance, both deficiency and excess of selenium can lead to health issues, making its study crucial in the field of Toxicology.
