Plant-based macronutrition emphasizes the carbohydrates, proteins, and fats obtained from plant foods. Complex carbohydrates from grains, fiber-rich vegetables, and legumes provide a steady source of energy and aid in digestion. Plant proteins, sourced from beans, lentils, nuts, and seeds, are increasingly valued for muscle maintenance and heart health without the saturated fats often associated with animal proteins. Healthy fats, particularly omega-3 and omega-6 fatty acids, are found in sources like flaxseeds, chia seeds, and avocados, which support cognitive and cardiovascular health. Research shows that plant-based diets rich in these macronutrients are linked to lower risks of chronic diseases, including obesity, diabetes, and certain cancers. This dietary approach also supports environmental sustainability, adding value beyond personal health. Nutritional science continues to explore optimal plant-based protein combinations and fat balances to ensure that plant-exclusive diets meet all essential amino acid and nutrient needs.