Smoked Cannabis' Effect on Lungs, pt. 3, Dr. Tashkin
Does regular marijuana smoking cause COPD, Emphysema and/or Lung Cancer? In part 3, Donald Tashkin, MD examines cancer risk and overall results from his study.
Donald P. Tashkin, MD – Medical Director of the Pulmonary Function Laboratory, Professor of Medicine, University of California, Los Angeles.
After 25 years of research, here are the study’s
Summery & Conclusions:
* Habitual marijuana smoking is associated with:
– Symptoms of acute and chronic bronchitis
– Evidence of microscopic injury to bronchial lining cells.
– Inconsistant evidence of mild airway obstruction.
* but NOT with an accelerated decline in lung function.
– Thus unlikely to be associated with the development of clinically significant COPD.
* In a large, prospectively designed population-based case-control study:
– We did NOT observe a positive association of marijuana use – even after heavy long-term use, with either lung or UAT cancer, controlling for tobacco use and other possible confounders.
– In marked contrast, we confirmed the strong dose-dependent effect of tobacco use on the occurence of these cancers.”