The roles of macronutrients in the diet are vital for maintaining overall health and energy levels. Carbohydrates provide the primary source of energy, fueling the body's activities and functions. Proteins play a crucial role in repairing and building tissues, supporting muscle growth, and producing essential enzymes and hormones. Fats, particularly healthy fats, are essential for energy, brain function, and the absorption of certain vitamins. A balanced intake of these macronutrients, along with proper portion control, helps maintain a healthy metabolism and supports overall nutrition.