Grow out of it? Jesus, how is that possible? I'm 130 pounds and bordering 6 feet! I can only get taller.
So was my brother when he was your age, and he did eventually get to 6'2". He would eat two rows of Oreos and drink a quart of milk several times a week in a desperate attempt to gain weight. Well, it all caught up to him eventually, because he's about 100 lbs. more than that now!