Let's see. Where did I put that? Ah, here it is.
"There was time for only one question, said the moderator, and San Francisco oncologist Donald Abrams, M.D., was already at the microphone: "You don't see any positive correlation, but in at least one category, it almost looked like there was a negative correlation, i.e., a protective effect. Could you comment on that?" [Abrams was referring to Tashkin¹s lung-cancer-only data for marijuana-only smokers in 1-10 j-yrs category.] "Yes," said Tashkin. "The odds ratios are less than one almost consistently, and in one category that relationship was significant, but I think that it would be difficult to extract from these data the conclusion that marijuana is protective against lung cancer. But that is not an unreasonable hypothesis."
Smoke'em if you got 'em.
He-he-he...from the same article...Marijuana Smoking Does Not Cause Lung Cancer
Marijuana smoking -"even heavy longterm use"- does not cause cancer of the lung, upper airways, or esophagus, Donald Tashkin reported at this year's meeting of the International Cannabinoid Research Society. Coming from Tashkin, this conclusion had extra significance for the assembled drug-company and university-based scientists ( most of whom get funding from the U.S. National Institute on Drug Abuse ).
Snip...After Abrams's presentation, a questioner bemoaned the difficulty of "separating the high from the clinical benefits." Abrams responded: "I'm an oncologist as well as an AIDS doctor and I don't think that a drug that creates euphoria in patients with terminal diseases is having an adverse effect." His study was funded by the University of California's Center for Medicinal Cannabis Research.