Lean boy

My son is on the lean side, and my mom is forever complaining that his bones are sticking out. Our last few visits to the pediatrician, however, showed that he is at the 50th percentile of his weight, which should be just right. His height, which used to be at 75th percentile, is now only at the 50th percentile though. Which made me worry a bit. But then, my husband and I are not really tall persons, so I shouldn't expect his height to be too tall. No hgh supplements for him.

I really shouldn't worry, since he's generally healthy and according to the charts, within normal.