Most US deaths from cannabis - related illness involved products containing tetrahydrocannabinol ( THC ) , according to data from the Centers for Disease Control and Prevention ( CDC ) . Of the 19 deaths included in the study , 84 % of victims had used cannabis products , while 14 % had exclusively used cannabis products . Cannabis use might have been under - reported because it remains illegal in some states , CDC noted . THC is the main psychoactive compound in marijuana . Health officials are unsure about how the deaths have occurred , but they have identified a possible fault in vape cartridges ' pre - processed liquids .
Most US deaths from vaping-related illness involved products containing tetrahydrocannabinol (THC), according to data from the Centers for Disease Control and Prevention (CDC). Of the 19 deaths included in the study, 84% of victims had used THC products, while 63% had exclusively used THC products. Cannabis use might have been under-reported because it remains illegal in some states, CDC noted. THC is the main psychoactive compound in marijuana. Health officials remain unsure about how the deaths have occurred, but they have identified a possible fault in vape cartridges' pre-processed liquids.