Ubushakashatsi bushya bugaragaza ko udukoko duto tuba mu nda no mu kanwa kacu (microbiome) dufite uruhare runini mu buryo dusinzira. Abashakashatsi bavuga ko ubwoko n’ubwinshi bw’utwo dukoko bishobora gutuma dusinzira neza cyangwa nabi, ndetse bikagira ingaruka ku isaha y’umubiri (circadian rhythm).
Ubushakashatsi bwagaragaje ko abantu bafite ibibazo by’insinzi (insomnia) akenshi baba bafite udukoko duke kandi tudahagije mu nda, ugereranyije n’abasinzira neza.
Byagaragaye kandi ko abantu baryama nabi cyangwa bafite gahunda y’isaha idahoraho (nko kuryama utinze mu mpera z’icyumweru) bagira impinduka zikomeye mu dukoko two mu nda.
Abahanga basobanura ko hari udukoko dufasha umubiri gukora imisemburo n’imiti igira uruhare mu gusinzira, nka serotonin na dopamine. Iyo utwo dukoko tugabanutse, bishobora gutuma insinzi ihungabana. Hari n’ubushakashatsi bwagaragaje ko kwimura udukoko two mu nda (faecal transplant) byafashije bamwe mu barwayi b’insinzi idakira gusinzira neza.
Nubwo ubu bushakashatsi bugikomeza, abahanga bemeza ko mu gihe kiri imbere, indyo iboneye, probiotics n’ibiryo bifasha udukoko twiza mu nda bishobora kuba uburyo bushya bwo kuvura ibibazo by’insinzi, aho kwishingikiriza gusa ku miti isanzwe.