Robin Jaffin, director of Supplier Programs, Verite, and Jacqui McDonald, Verite, New York City, February 6, 2014
95% CI, 53.2-91.7
American Journal of Epidemiology 158: 264271
World No Tobacco Day 2009: Campaign Materials
While more research is needed to determine if smoking weed can cause lung cancer, we do know that inhaling any kind of smoke isnt good for the lungs. How Smoking Weed Causes Lung Damage According to the American Lung Association, smoking marijuana can damage the lungs, it can: Damage the cell linings of the lungs, which can lead to chronic cough, phlegm, upper respiratory infections, bronchitis or pneumonia Affect the immune system making it harder to fight disease and infection Expose the lungs to the same toxins and carcinogens as found in tobacco Weed has been shown to contain tar, similar to whats found in cigarettes