My daughter had a pituitary gland problem as a young adolescent, and was prescribe HGH injections by her specialist. It has made a huge difference in her quality of life, allowing her to grow into a normal height and weight range. She's now a senior at an excellent university, doing quite well, and this would not have happened without the HGH. Her specialist believes that in ten years or so, taking HGH in small doses from middle age on will become a normal medical practice, like taking vitamins is now. It has remarkable impact on healing and retarding the aging process, and in small doses isn't harmful (because that's what our body makes naturally up until middle age). The primary reasons this isn't happening how are: 1) it is expensive because there aren't many labs producing it, and insurance companies don't want to pay for it. 2) it can be harmful in large doses 3) tradition in the medical community.