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Canadian Respiratory Journal
Volume 7, Issue 3, Pages 227-228
Information for Patients

Number 3: Chronic Obstructive Pulmonary Disease -- Stopping Smoking: It is Never Too Late

Douglas MC Wilson

McMaster Stop Smoke Clinics, McMaster University, Hamilton, Ontario, Canada

Copyright © 2000 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Smoking is the main cause of chronic obstructive pulmonary disease, and the function of the lungs in smokers deteriorates with time at a much faster rate than in nonsmokers or ex-smokers. Smokers with chronic lung disease can often function better, breathe more easily and cough less, just by stopping smoking. They require less medication (puffers, etc) and the deterioration of lung function is slowed. Within 24 h, the amount of carbon monoxide in the lungs and blood returns to normal, allowing more oxygen to supply body functions.