Why are some minerals such as copper only needed in small amounts in your diet?

Some minerals, like copper, are classified as trace minerals because they play critical roles in various physiological processes, yet the body requires them in only small amounts. Copper is essential for functions such as energy production, iron metabolism, and the formation of connective tissues. The body is efficient at utilizing these minerals, and excess intake can lead to toxicity, making it important to maintain a balanced diet that includes only the required amounts.