ʻO ka HGH he hormone i hana maoli ʻia e ke kino.Hoʻopili maoli ʻia a hūnā ʻia e nā ʻili ʻili ma ka pituitary gland anterior aia ma lalo o ka lolo.Hoʻoulu ka HGH i nā kaʻina hana metabolic i loko o nā cell.Hoʻopilikia ka HGH i ka protein, ka momona, ka momona a me ka metabolism mineral.ʻO ka hana nui o ka HGH ka hoʻoulu ʻana i ke akepaʻa e hūnā i ka Insulin-like Growth Factor-I (IGF-I).