Those reports are propaganda. They ARE harmless and the long term effects have been studied for nearly a century. People say 'not enough study on the long term effects' because they are uninformed. To clarify, there are three ingredients: nicotine is about as harmful as caffeine and well-tested, vegetable glycerine is known to be harmless (beneficial, actually - they pump its vapor into the lungs of sick newborns) also well-tested, and the last ingredient is the same flavors you inhale when you smell dessert baking. Inhaling these things is not new, all that is new is the portability (because of lithium battery technology). Nobody should take up vaping with nicotine from scratch, but all smokers should transition to it. (Nicotine harms adults about as much as caffeine, but is notably harmful to developing brains; so no kids or pregnant women should touch it. What harms grown smokers has never been the nicotine, even Nicoderm knows that.)