[VRWC_minion]

Your logic is that seeing that some cancers are not caused by smoking therefore no cancers are caused by smoking ? Interesting.

[Bogey]

Actually my logic is that you have non smokers and smokers get lung cancer. I question how it is determined that both didn't get it from other risk factors.. To blame smoking is convenient, but doesn't do crap for the non smoker.
If smoking causes cancer, it should cause it anywhere, and there is no documentation to show that.
Colon cancer is very low in smokers. So is breast cancer.
10% of smokers get lung cancer. You have more than 10% of all drivers killed every year.
Smoking has become a convenient way to cover up the fact that we are no closer to the truth on cancer or heart disease than we were 50 years ago.
Maybe if the ACS would spend more than 15% of their billions on research instead of salaries we might get some progress.