Carbohydrates: Provide the primary source of energy. Complex carbohydrates found in whole grains are preferable for sustained energy release.
Proteins: Essential for tissue repair, muscle growth, and enzyme production. Sources include meat, dairy, legumes, and nuts.
Fats: Necessary for cell structure, hormone production, and the absorption of fat-soluble vitamins (A, D, E, and K). Healthy fats can be found in olive oil, avocados, and fish.