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 The respiratory epithelium in the era of vaping: insights from in vitro, in vivo and human studies European Respiratory Society Chronic electronic cigarette exposure in mice induces features of COPD in a nicotine dependent manner Thorax PET shows unique lung inflammation due to e cigarettes AuntMinnie