Nicotine Poisoning: What It Is, Symptoms, Causes & Treatment E cigarettes: Facts, stats and regulations JUUL E Cigarettes Harrison County Health Department E cigarettes can be harmful. #childaccidentpreventiontrust #childsafety #healthvisitor #healthvisitors Fast facts on the effects of e cigarettes and vaping E cigarettes might harm lung tissue much like regular cigarettes do whether they contain nicotine or not a new study says.