Micronutrients are essential vitamins and minerals required in small amounts for various bodily functions. They play crucial roles in metabolism, immune function, and cell function. Common examples include vitamin C, iron, and zinc. Unlike macronutrients (proteins, fats, carbohydrates), micronutrients are vital for preventing deficiencies that could lead to serious health issues. A balanced diet rich in fruits, vegetables, and whole grains typically supplies adequate levels of these nutrients, supporting overall health and enhancing well-being.