Oya, #guca #inyuma uwo wateye #inda ntibifite isano no kuvuka k'umwana ufite ubumuga bwo mu mutwe cyangwa ubundi bumuga bwose.
Imiterere y’umwana cyangwa ibibazo byo mu bwonko bishobora guterwa n’impamvu zitandukanye zirimo:
1. #Imisemburo cyangwa ubuzima bw’umubyeyi: Ibyo umubyeyi akora cyangwa ibibazo by’ubuzima agira bishobora kugira ingaruka ku mwana mu gihe ari mu nda.
2. Imiterere y’uturemangingo (genes): Ibintu bijyanye n’uturemangingo tw’ababyeyi bishobora kugena imiterere y’umwana.
3. Ibidukikije: Nk’imirire y’umubyeyi, uburyo yita ku buzima bwe mu gihe cyo gutwita, kunywa ibiyobyabwenge, itabi, cyangwa inzoga, bishobora kugira ingaruka ku mwana.
Guca inyuma ni ikibazo gishingiye ku bwizerane mu mubano ariko ntaho bihuriye n’ubuzima cyangwa imiterere y’umwana uri mu nda.