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While health officials and lawmakers continue trying to steer young people away from vaping, the wide variety of enticing flavors added to these products make that a tough task. Although most of the worry over vaping comes from the risk of addiction, lung damage, and threat of switching to conventional cigarettes, a new study finds the flavoring chemicals these products use may be just as harmful as anything else. Researchers from the University of South Florida Health say vaporized flavoring molecules are toxic to the heart and damage the organ’s ability to beat correctly.