Cannabis is Better For Your Lungs Than Tobacco

For medical marijuana patients this is good news.
If we're talking about the lungs, the two biggest concerns are emphysema and lung cancer. Tobacco scores far worse in both categories:
Emphysema was detected in only one of the cannabis smokers (1.3%), in 15 (16.3%) of the cigarette smokers, in 17 (18.9%) of the combination smokers, and in none of the non-smoking groups. [MedPageToday.com]
With regards to lung cancer, the case for is even stronger. Conclusive evidence shows that marijuana does not cause lung cancer at all, and may even help prevent it.
While smoking marijuana is never good for the lungs, the active ingredient in pot may help fight lung cancer, new research shows.
Harvard University researchers have found that, in both laboratory and mouse studies, delta-tetrahydrocannabinol (THC) cuts tumor growth in half in common lung cancer while impeding the cancer's ability to spread. [Forbes]