I vaporize more than I smoke. I believe, however, that THC and CBD can be potent anti-carcinogenic agents. You may wish to read some of the entries in the "Cancer" and "Tobacco vs Cannabis" sections in the link below. There are quite a few studies about cancer and THC and/or CBD.

I am looking forward to finding more studies on long-term cannabis use and cancer rates! And Alzheimer's for that matter! These are two subjects that weigh on the minds of our aging population. If cannabis is just half as good as the studies I've found suggest, and our government opens it's tightly-shut eyes, we will see legal medical cannabis, nationwide, within the next 10 years. - Granny:hippy: