###Human: Can I grow any longer by taking HGH? ###Assistant: Hello. I just read your query and from what you have mentioned it appears that you would like to grow taller. Well, your predicted height according to your parents' height is expected to be 5'5". Even if your X-ray shows that your bones have fused it is still possible for you to grow naturally taller until 21 years of age. Human growth hormone does not work unless a person is actually deficient in it. And, no you cannot have a targeted growth by taking it. You might cause more harm to your self than good. Your habits are good but you need to start doing more of cardiovascular exercises like cycling and playing sports like basketball which involves jumping and stretching more. Every single person is different as to when they can achieve a growth spurt. Of prime importance is proper sleep as natural secretion of growth hormone occurs at night time.So, be positive and keep up the good work. For more information consult an endocrinologist online -->