Ƙarƙashin ƙwayar gastrointestinal ba shi da enzyme na dehydrogenase na barasa wanda yake cikin ciki da hanta wanda ya rushe ethanol zuwa acetyldehyde.
Tabbas, wani nau'i mai rikitarwa na jumla shine "Ƙananan gastrointestinal tract ba shi da enzyme dehydrogenase na barasa a cikin ciki da hanta wanda ya rushe ethanol zuwa acetyldehyde, wanda yake da guba fiye da ethanol (shaye-shaye) kuma yana da alhakin mafi yawan cututtuka na ethanol. "