well, thats debateable. If you use a water filtration device it is far better for you than tobacco. And even without filtration it is not carcinogenic (sp?). While tobacco obviously is. But yes with no filtration, "shisha" can cause lung problems including but not limited to emphasema. (SP?)
.....i am a terrable speller and too lazy to look things up. sorry
actually if you check, recent studies have actually shown THC and other marijuana related compounds SLOW the spread of lung and cervical cancer. . and just because something puts tar into your lungs it DOESNT mean that tar will magically turn to cancer......... (wait i thought we were talking about weed? molasses-tobacco? what the fuck. all my comments are true.. although only for weed, i am sure anything tobacco related causes cancer.)