When people count macros for intentional weight loss, the idea is to hit a target number of grams of each macronutrient each day. The amount of protein, fat, and carbohydrates needed to lose weight varies depending on starting weight, how active a person is, and other complex factors. Because it requires paying close attention to food intake and counting grams of the different macros, it is not recommended for people with a history of disordered eating.