Cristian, the recommendations are for mature adults. Until you finish growing, you should be eating far more protein than we recommend on these forums. As you point out, it’s limiting carbs only that is important for a growing boy. Or girl.
I don’t understand why anyone thinks that carbohydrates are good for children. One of the things that Nina Teicholz discovered about the American diet is that during the colonial days and well into the nineteenth century, the diet in the United States was mostly meat, very little in the way of vegetables, no refined sugar, and very little in the way of refined grains, either. The “diseases of Western civilization” were not nearly as prevalent as they are now, and children grew to be fine strapping adults, taller and healthier than people from almost every other country. Americans also had the longest life expectancy (assuiming they survived to adulthood, of course; it was infectious disease striking at children that brought down the average lifespan). The native tribes that ate almost exclusively protein and fat were even healthier than the white population.
We also know that the dietary minimum requirement for carbohydrate is 0 (zero) grams; there are no diseases of carbohydrate deficiency, in either adults or children.
