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Marijuana use and risk of lung cancer: a 40-year cohort study.

Marijuana use may facilitate the development of lung cancer.

​This study determined the risk of lung cancer associated with the use of marijuana (cannabis). Researchers followed 49,321 Swedish men aged 18-20 years for a period of 40 years, monitoring their marijuana usage and health. 

The research team discovered that cannabis smoking increased the risk of lung cancer by more than 2-fold. The findings of this study revealed that marijuana use might be a contributing factor to the development of lung cancer.

Research Summary Information

  • 2013
  • Callaghan RC, Allebeck P, Sidorchuk A.
  • Northern Medical Program, University of Northern British Columbia (UNBC), 3333 University Way, Prince George, BC, V2N 4Z9, Canada, russ.callaghan@unbc.ca.
  • No, Free full text of study was not found.
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