HGH ke hormone e hlahisoang ke 'mele ka tlhaho.E hlile e entsoe 'me e patoa ke lisele tsa letlalo tse karolong e ka pele ea pituitary e ka tlase ho boko.HGH e susumetsa mekhoa e mengata ea metabolism liseleng.HGH e ama protheine, mafura, lik'habohaedreite le metabolism ea diminerale.Karolo e ka sehloohong ea HGH ke ho susumetsa sebete ho hlahisa Insulin-like Growth Factor-I (IGF-I).