Medical February 3, 2011 Lung Cancer Association with Smoking Marijuana Debunked A study led by Donald Tashkin of the University of California suggests incidences of lung cancer are not the same when one uses marijuana and when one smokes tobacco.
June 5, 2009 Top Anti-Drug Researcher Changes His Mind, Says Legalize Marijuana One of the world's foremost lung health experts says it's time to legalize marijuana.