Just How Harmful Is Vaping? More Evidence Is Emerging. The New York Times Recent studies have found metal within vaping dispensers, which can be toxic when inhaled. #Aspirus Respiratory Therapist Sarah Schroeder sat down with WSAW NewsChannel 7's Kassandra Sepeda WSAW and Sean Caldwell to Trends in long term vaping among adults in England, 2013 23: population based study The BMJ Online vape retailers ignore rules protecting minors, study finds Los Angeles Times