What nutrients made by living things are required in very small amounts to assist with chemical reactions in the body?

Micronutrients such as vitamins and minerals are required in very small amounts to assist with various chemical reactions in the body. These micronutrients play essential roles in processes such as energy production, immune function, and cell growth and repair. A balanced diet that includes a variety of nutrient-dense foods is essential to ensure adequate intake of these micronutrients.