The third leading cause of death, behind cardiac disease and cancer is? Long pause. COPD. Chronic Obstructive Pulmonary Disease. What's that you say? A chronic form of lung disease that causes bronchitis, cough, shortness of breath, and emphysema. Oh, that disease ! I bet you thought it was the smoker's disease.
Well, it is. For 75% of the people with COPD, the have or are currently smokers. But that means 25% of people with COPD have never smoked at all.