I-peptide esebenzayo ligama eliqhelekileyo leepeptides ezingaphezu kwewaka, ezifana ne-peptide luhlobo lwepeptide esebenzayo.Idlala indima ebalulekileyo ekukhuleni nasekuphuhliseni abantu, imetabolism, izifo, ukwaluphala kunye nokufa.I-peptide esebenzayo yinto ebalulekileyo emzimbeni womntu.Kungenxa kanye ngenxa yokwanda okanye ukuncipha kokuphuma kwayo emzimbeni ukuba abantu babe nomjikelo wobuntwana, ubuntwana, ubudala, ukwaluphala nokufa.Inaliti yeepeptides esebenzayo iphula lo mjikelo wobomi, ukuze kwandiswe ubomi.
Iipeptide ezisebenzayo zidlala indima ikakhulu ekukhuleni komntu, ekukhuleni, ekukhuselekeni nasekukhuleni komzimba womntu.Ukuba i-peptide esebenzayo iyancitshiswa, imisebenzi yomzimba womntu iya kuba neenguqu ezibalulekileyo.Kubantwana, ukukhula kunye nokukhula kwakhe kuyacotha okanye kuyeka.Ngokuhamba kwexesha, ama-dwarfs aya kwenziwa.Kubantu abadala okanye abantu abadala, ukunqongophala kweepeptide ezisebenzayo, ukhuseleko lwabo luya kuncipha, i-metabolism kunye nokuphazamiseka kwe-endocrine, kunye nokubangela izifo ezahlukeneyo, ezinjengokuphuthelwa, ukwehla kobunzima okanye i-edema.