Umunyu ni ikirungo gikenerwa mu mubiri w’umuntu kuko ufasha mu mikorere yawo ya buri munsi. Ariko, kurya umunyu mwinshi cyane bishobora kugira ingaruka mbi
Ubushakashatsi bushya bwakorewe ku bagore bari hagati y’imyaka 20 na 70 bwerekanye ko abagore babona imibonano mpuzabitsina rimwe mu kwezi cyangwa munsi yaho baba