Is marijuana a carcinogen?

it is not a carcinogen. thats not to say that the smoke isnt bad for your lungs. but there are no chemicals in weed. so your body can get rid of whats coming in. but its def, def! not laced with things that are in ciggarettes depending on if you are smoking the natural stuff that god made oppossed to the **** people lace (which pisses me off). because there are no chemicals in weed.