HGH ni imisemburo isanzwe ikorwa numubiri.Mubyukuri irashizwemo kandi ikarekurwa ningirangingo zuruhu muri glande yimbere ya pitoito iherereye munsi yubwonko.HGH itera inzira nyinshi zo guhinduranya muri selile.HGH igira ingaruka kuri poroteyine, ibinure, karubone ndetse na metabolism.Uruhare runini rwa HGH ni ugukangura umwijima gusohora insuline imeze nkikura-I (IGF-I).