How Much is Vaping Bad For You? Health Risks Explained Increased vaping popularity amongst minors may put them at risk of severe lung injury Catalyst How bad are ecigarettes? What can we learn from animal exposure models? Marczylo 2020 The Journal of Physiology Wiley Online Library E cigarette, or Vaping Product, Use Associated Lung Injury (EVALI) Fact Sheets Yale Medicine Is Propylene Glycol Dangerous to Inhale? Safety and Use in E Cigarettes SMOKO E Cigarettes Researchers at the University of California, Riverside, found that heating propylene glycol, the main ingredient in most e cigarette liquids, can produce two toxic chemicals, methylglyoxal and acetaldehyde, which damage lung cells. Using