E cigarettes: How they work, risks, and research New medical research is raising concerns about possible links between vaping and bronchiolitis obliterans also known as popcorn lung, a rare and irreversible lung disease. Health experts say more long term E cigarette use to reduce cigarette smoking may not increase nicotine dependence Penn State Health News Teens and Vaping: Everything You Need to Know Agape E cigarette or vaping product use associated lung injury: an emergency medicine approach for early diagnosis and treatment