Well first of all the fact that u cough up phlegm! thats a clear indicater that somethings not right.

We know it's bad for you we just dont know how bad yet, much the same as smoking through an alluminion pipe, theres no real proof that it's bad for you but there is a lot of evidence that it is.

The only way smoking weed could be good for you is if the THC or any other compound found in it were not only good for you but powerful enough to override the bad chemicals so top speak. And this is almost insanly unlikly.
MullManiac Reviewed by MullManiac on . Pot not a major cancer risk NEW YORK (Reuters Health) - Although both marijuana and tobacco smoke are packed with cancer-causing chemicals, other qualities of marijuana seem to keep it from promoting lung cancer, according to a new report. The difference rests in the often opposing actions of the nicotine in tobacco and the active ingredient, THC, in marijuana, says Dr. Robert Melamede of the University of Colorado in Colorado Springs. He reviewed the scientific evidence supporting this contention in a recent Rating: 5