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Smoked Cannabis' Effect on Lungs, pt. 3, Dr. Tashkin

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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.”

Presented to Fifth Clinical Conference on Cannabis Therapeutics held in Pacific Grove, CA, April, 2008. Conference hosted by Patients Out of Time.
http://MedicalCannabis.com

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