Smoking cigarettes has long been proven to cause severe lung damage, including chronic obstructive pulmonary disease (COPD), emphysema, and lung cancer. Over time, cigarette smoke destroys lung tissue, fills airways with tar, L'abandon du tabac au profit de la cigarette lectronique provoque une amlioration rapide de la sant cardiovasculaire Observatoire de la prvention de l'Institut de Cardiologie de Montral Prvalence chez les jeunes RDC E cigarette prevalence by province Tobacco Use in Canada University of Waterloo