Bwanji osadya nsomba? Nsomba siimva kupweteka.” Odya zamasamba omwe ali ndi zaka zambiri amakumana ndi mkangano umenewu mobwerezabwereza. Kodi tingatsimikize kuti nsomba sizimva kupweteka kwenikweni? Kafukufuku wopangidwa m'zaka zaposachedwa akutsutsa kwathunthu chinyengo chambirichi.
Mu 2003, gulu lofufuza pa yunivesite ya Edinburgh linatsimikizira kuti nsomba zili ndi zolandilira zofanana ndi zomwe zimapezeka mu zamoyo zina, kuphatikizapo zinyama. Kuonjezera apo, pamene zinthu monga poizoni ndi zidulo zinalowetsedwa m’matupi a nsomba, zinkasonyeza zochita zomwe sizinali zongopeka chabe, koma zinali zofanana ndi khalidwe limene lingawonedwe mwa zamoyo zotukuka kwambiri.
Chaka chatha, asayansi aku America ndi a ku Norway anapitirizabe kuphunzira za khalidwe ndi mmene nsomba zimakhudzidwira. Nsombazo, monga momwe anayesera ku Britain, zinabayidwa ndi zinthu zopweteka, komabe, gulu limodzi la nsomba linabayidwa ndi morphine panthawi imodzi. Nsomba zopangidwa ndi morphine zinkachita zinthu bwinobwino. Enawo anali kuthamanga uku ndi uku ndi mantha, ngati munthu womva ululu.
Sitingathe, ngakhale panobe, kunena motsimikiza ngati nsomba ingamve kuwawa m’njira imene tikuimvetsetsa. Komabe, pali umboni wochuluka wosonyeza kuti nsomba ndi zolengedwa zovuta kwambiri kuposa momwe anthu akhala akuvomerezera, ndipo palibe kukayikira kuti chinachake chikuchitika pamene nsomba imasonyeza khalidwe lomwe limasonyeza ululu. Conco, pankhani ya nkhanza, wozunzidwayo ayenela kuganiziridwa bwino.