you have to give people the right to poison themselves and, yes, even their children, truly it is their right.
i NEVER pipe up with such things anymore. rather i wait until some small simple health problem can be fixed with a few herbs or some health cocktail i am very familiar with. i then administer this, they "magically" get better and then THEY ask ME "what about this and what about that" thats the only way i even address the subjects anymore. i have been thru what you describe too many times, i am over it, so be it. people will poison themselves until they can't stand it anymore then they will seek help, just be willing to be there when they do.