Note that diacetyl has been removed from almost all flavour compounds used in the creation of ejuice, aside from some custard ones, and even then there's variat

Note that diacetyl has been removed from almost all flavour compounds used in the creation of ejuice, aside from some custard ones, and even then there's variations without diacetyl. In any case, I doubt there's a very significant amount of people who've started ecigs who wouldn't have started cigarettes, and cigarettes are well known to cause lung damage.