question:
do they have any tar like cigarettes do? I'd assume not because they're different plants and apparently don't kill your lungs
I've read about this before.
According to the American Lung Association, smoking marijuana deposits four times more tar into the lungs than if you smoked the same amount of tobacco. This is very misleading information though because you have to take into consideration that people smoke significantly less marijuana than they do tobacco. You'd have to smoke ridiculous amounts of it daily to make that study relevant at all.