Ma GMO akumananso ndi chipwirikiti pambuyo pofalitsa kafukufuku wa Pulofesa Gilles-Eric Séralini pa Seputembara 19, 2012, kuwonetsa momwe chimanga chimakhudzira makoswe chimakhudzidwa. Chifukwa chabwino chowonera momwe zinthu zilili komanso momwe zamoyo zosinthidwa ma genetic zingakhudzire thanzi lathu.

Zamoyo zosinthidwa ma genetic, kapena ma GMO, ndi zamoyo zomwe DNA yasinthidwa ndi kulowererapo kwa anthu chifukwa cha uinjiniya wa majini (njira zasayansi ya mamolekyulu ogwiritsira ntchito ma genetic kuti agwiritse ntchito, kuberekana kapena kusintha ma genome a zamoyo). Njira imeneyi imatheketsa kusamutsa majini kuchoka ku chamoyo (chinyama, chomera, ndi zina zotero) kupita ku chamoyo china cha zamoyo zina. Kenako timalankhula zosasintha.