Wow, if you haven't done any research on this shit then I dunno. You can find scientific studies on the smokable qualities of papers and blunts; the fact is you are inhaling a foreign substance and there is nothing saying that it can't cause cancer either way. If you're going to smoke anything then smoke your preference, not what you hear from your friends. Smoke what is enjoyable to you. If you find research that proves that papers are bad for you, then by all means: avoid them. Otherwise, you smoke your friggen ass off.