Long Term Marijuana Use Does Not Significantly Affect Lungs


As more and more scientific research is conducted on cannabis around the country, some positive news is emerging for frequent and long-time cannabis smokers. According to new data published to the Annals of the American Thoracic Society, the inhalation of one marijuana cigarette per day over a 20-year period is not associated with any adverse changes in lunch health.

The study was conducted by researchers at Emory University in Atlanta, who assessed cannabis smoke exposure and lung health in a large sample of US adults between the ages of 18 and 59. Researchers reported that no negative changes were found due to inhalation of cannabis smoke.

Researchers further reported that cannabis smoke may in fact even be associated with some protective lung effects among long-term smokers of tobacco.

The study also noted that cannabis smoke exposure was not positively associated with development or onset of lung cancer, pulmonary disease, or emphysema. It concluded that “Habitual use of marijuana alone does not appear to lead to significant abnormalities in lung function. Findings from a limited number of well-designed epidemiological studies do not suggest an increased risk of either lung or upper airway cancer from light or moderate use. Overall, the risks of pulmonary complications of regular use of marijuana appear to be relatively small and far lower than those of tobacco smoking.”