In the most basic terms, weight loss (or gain) is achieved by consuming less (or more) calories than we burn over an extended period of time. By tracking macros, you’re also tracking calories. But if all you need to do is eat less or more than you expend, why bother worrying about hitting protein, carbs and fats? As much as a calorie is a calorie, eating a diet based around your specific macro needs is going to allow you to achieve your performance and physique goals more effective and efficiently.
Each macronutrient provides your body with something different, so let’s break down a reasons why consuming an appropriate amount of each is important.
Taking a closer look at your intake past total calories allows you to tailor a diet to your needs or goals. For example, take two athletes that are similar in terms of height, weight and body fat, but one is training for endurance versus the other who is a strength athlete. We know that an endurance athlete is going to have a higher carbohydrate demand than a strength athlete so calories can be partitioned to favor that.
If your goal is more general health, focusing on eating sufficient amounts of each macronutrient is also going to help you consume a variety of micronutrients so that you’re losing weight without denying your body the nutrition it needs to thrive. Eating a diet that’s very high in one macronutrient likely means you’re not consuming enough of another. Consuming meals that contain a balance across all three macros, and some fiber will slow down digestion and regulate blood sugar to keep energy levels from spiking and crashing.
In few words, tracking macros allows you to be more precise about eating for your goals by tailoring your nutrition to your needs!