I understand the thinking on ingestion but, really, the flavoring molecules are absorbed by the tongue, throat, lips, mouth pallate/roof and even nose and bronchial tissues unless you don't breath while eating. I, seriously, don't think being absorbed by tissues anywhere in the body whether those minus gut/intestinal walls through vaping puts them into different bodily systems. Its still via tissue absorption and "toxic" means into the blood stream. If anything, I would be more leery eating them actually as then I know they are fully or 100% absorbed by the tissues in the gut into the blood stream... if looking at the flip side.... at least vaping many of them are just exhaled quickly. But that's my thinking and it just seemed ironic to me that unflavored vg was deemed, supposedly, okay when its not normally inhaled either (only ingested) but the flavors are "toxic." On second thought, maybe the doc is just against flavorings period... even eating them. Maybe he/she's seen the affects they have on some kids. And I suspect I could be getting more of them chain vaping than I would ingesting but that's only because I, most likely, vape more than I eat but, then again, there is so much artificial flavoring in everthing we eat and in greater quantity to produce the taste that that might not be the case. I drink flavored soda, koolaide, etc more than ever to stay hydrated. Its no big deal to me though. As others have said, I'm happy doing anything safer than smoking.
Edit: I don't know why "reply with quote" doesn't work for me sometimes... oh, well... sorry, to those I replied to.