Large Study Finds No Link between Marijuana and Lung Cancer
June 19th, 2006
“We expected that we would find that a history of heavy marijuana use–more than 500 to 1,000 uses–would increase the risk of cancer from several years to decades after exposure to marijuana,” explains physician Donald Tashkin of the University of California, Los Angeles, and lead researcher on the project. But looking at residents of Los Angeles County, the scientists found that even those who smoked more than 20,000 joints in their life did not have an increased risk of lung cancer.