The macronutrient ratio for weight loss helps you balance the three main nutrients — carbohydrates, proteins, and fats — to support fat loss while maintaining muscle mass and energy levels. A common and effective ratio for weight loss is 40% carbohydrates, 30% protein, and 30% healthy fats. This balance provides enough carbs for energy, adequate protein for muscle repair and satiety, and good fats to support hormones and metabolism. However, the ideal ratio can vary based on age, gender, activity level, and fitness goals. Tracking your macros and adjusting as needed ensures a sustainable and healthy weight loss journey.