Donald P. Tashkin, M.D, Professor of Medicine, Medical Director of the Pulmonary Function Laboratory, Geffen School of Medicine, has been the source for many attacks on pot over the years then in more recent times the source of the study which finally demonstrated that there was no statistical link between pot and lung cancer. Most of us have never heard it or read it in detail from the man himself though so here it is, both the good and the bad, from a man whose job it was to find the bad and who is the major source of lung function research in the US over recent decades.

He doesn't get into other stuff, mostly lung function, but it's a worthwhile 40 minutes or so between the two parts of the interview.