Can vaping damage your lungs? What we do (and don't) know Harvard Health Vaping: What Are The Risks & Is It REALLY Safer Than Smoking? Women's Recovery New strong evidence that Juul is more toxic to lungs and hearts than earlier e cigs Stanton Glantz blog The Impact of E Cigarettes and Asthma: What You Need to Know Juul disregarded early evidence it was hooking teens Is Juul the new big tobacco? Wave of lawsuits signal familiar problems Smoking The Guardian