Does vaping (using e cigarettes) make a difference to our health and are there harms with second hand vaping? iHealth Facts Vaping is NOT Harmless. Know the long term effects before it's too late! Most e cigarette liquids contain high levels of nicotine, which is highly addictive. Despite the legal age being 21, vaping devices Vaping Versus Smoking: Are Electronic Cigarettes the Savior? Arteriosclerosis, Thrombosis, and Vascular Biology The impact of e cigarette exposure on different organ systems: A review of recent evidence and future perspectives ScienceDirect