After about 2 hours of research we have found an official document from the FDA commenting on the tests they've done on Propylene Glycol and the results were a given to us, but to the media they seem to keep saying the FDA "Just doesn't know what the outcome is of ingesting propylene glycol"
Grab a seat and check this one out:
(taken from The Antimicrobial Division Toxicology Endpoint Selection Committee, [ADTC] EPA-HQ-OPP-2006-0831)
General Toxicity Observations:
Upon reviewing the available toxicity information, the Agency has concluded that there are no endpoints of concern for oral, dermal, or inhalation exposure to propylene glycol and dipropylene glycol. This conclusion is based on results of toxicity testing of propylene glycol and dipropylene glycol in which dose levels near or above testing limits (as established in the OPPTS 870 series harmonized test guidelines) were employed in experimental animal studies and no significant toxicity observed.
A review of the available data has shown that propylene glycol and dipropylene glycol to be negative for carcinogenicity in studies conducted in testing up to limit doses established by the Agency; therefore no further carcinogenic analysis is required.
And that's it folks. So all that mess on the news stays on the news. We have already done tests over about a 10 year span and scientists are saying, according to the experiments...there is nothing at all wrong with Propylene Glycol. But at the end of the day, it's really up to you.