I wonder, does anyone know how bad smoking Marijuana really is? I am totally against smoking, and luckily, it is mostly the nicotine that makes cigarettes cancer-bringing-stick-o-death. (and the nicotine also causes more chance at heart attacks, and stuff like that.) But still, how much tar does smoking pure marijuana really put in your lungs?

I heard the "marijuana has 3/4 times more tar in it than tobacco" is not claimed on good research, but on a single bad test as part of the anti-propaganda around marijuana.

Also, I heard bongs actually filter out just as much THC as Tar, thus not really helping (besides giving a way more comfortable smoke).

Anyone any Good sources for this information?