No. IT IS NOT. You have been mislead.
Unfortunately, for whatever reason, there is currently a lot of FUD and propaganda surrounding vaping. Perhaps due to the term "e-cigarette"?
Other than artificial flavors, the major constituents in the liquid are what I listed above - propylene glycol, vegetable glycerin, and nicotine. Only nicotine has significant documented health effects (at least that I am aware of), and even that's almost entirely down to it being addictive.
Bear in mind that I'm comparing this to smoking weed or drinking alcohol - both extremely common pastimes throughout the world, and both clearly more harmful than vaping. Anyone trying to scare you off of vaping while not worrying about those other two activities is out of touch with reality.
Of course, abstaining from all of those would be the best advice as far as your long term health is concerned.