I haven't seen any studies of the effects of HGH on height in adults, so I'm curious if anyone can share personal experiences. I know that after age 20, the long bones have fused and can no longer increase in length. However, there are other bones that contribute to height (pelvis, spine, and skull). If HGH can increase the size of the these bones, can it increase height slightly? I'm only hoping for an inch or so. Even half an inch would be great.