Can you grow about 7 inches in 2 years if you are 16 years old?

Probably not. But there are people in the world who are now 8 foot 11. They have problems with their glands and they keep growing. The old record holder: http://www.roadsideamerica.com/attract/ILALTwadlow.html The new record holder: http://english.pravda.ru/main/18/90/361/12658_giant.html