The knowledge that smoke-correlated diseases exist may motivate smokers to stop. On
the other hand, smokers, after reading such warnings, might also be incited to ask their
GP's to perform a spirometry before symptoms appear. The presence of bronchial
obstruction after the test, may be a further strong motivation to give up smoking. In fact,
some studies demonstrated that a diagnosis of airflow limitation induced smokers to
attempt to quit their habit [11].