This 'research' is in direct contradiction to several studies that have indicated marijuana might have a protecting effect against certain cancers.
see: web md "Marijuana Unlikely to Cause Head, Neck, or Lung Cancer By Peggy Peck WebMD Health News"
at: http://www.webmd.com/smoking-cessation/news/20000508/marijuana-unlikely-to-cause-cancer
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This 'research' is in direct contradiction to several studies that have indicated marijuana might have a protecting effect against certain cancers.
see: web md "Marijuana Unlikely to Cause Head, Neck, or Lung Cancer By Peggy Peck WebMD Health News"
December 30, 2010 - 2:42pmat: http://www.webmd.com/smoking-cessation/news/20000508/marijuana-unlikely-to-cause-cancer
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