I'm no professional, but I'd say smoking mad blunts is a lot worse than cigarettes even. Because, although the only reason people buy dutches and phillies are to roll blunts, you're not supposed to inhale that paper anyway (it has traces of nicotine, too). I'd think they are carcinogenic, but only if you're smoking lots.

I love blunts too, and used to chief them 7 days a week just like you, but lately I've been enjoyin the bong. I still enjoy a nice blunt like once a week though.