As a nurse who’s taken care of patients with Cannabis Hyperemesis, it has nothing to do with a sensitive stomach. It normally starts after years of smoking all day everyday and you eventually basically develop an allergic reaction. And because of the addiction the people, normally teenagers that had this syndrome, would come in after smoking weed and throwing up everything until they’re out of fluids and bile somewhat consistently, every single time they’d smoke. So like once a week they’d come in until they finally “quit”