The primary macronutrients that the body needs for energy are carbohydrates, proteins, and fats. Carbohydrates serve as the primary energy source, providing quick fuel for physical activities and bodily functions. Proteins are essential for tissue repair, muscle building, and producing enzymes and hormones. Fats provide a concentrated energy source and support the absorption of fat-soluble vitamins. Each macronutrient plays a unique role in overall health and well-being, requiring a balanced intake from various food sources to support optimal metabolism and bodily functions.