Oops...didn't notice jepoy's question. Sorry!
Yes, that is an old, accepted formula used in pediatrics. We're not saying that nutritional upbringing does not contribute at all to your eventual height. On the contrary, I said in a previous post in this topic that it is also a factor. You've seen malnourished kids, right? They're usually small, because their growth have been stunted due to poor diet. HOWEVER, no amount of balanced diet will make you taller than what you're destined to be.