Monday, November 7, 2011

Cancer and the Effects of Alcohol vs. Marijuana

   Alcohol is associated with an increased risk of cancers of the mouth, esophagus, pharynx and larynx, colon, liver, stomach, breast, and ovaries. A 2011 study found that one in 10 of all cancers in men and one in 33 in women were caused by past or current alcohol intake.(6)(7)
   While many researchers agree that marijuana contains known carcinogens, or chemicals that can cause cancer. Results of epidemiologic studies of marijuana and cancer risk have been inconsistent, and most recent epidemiologic studies have not found a substantial effect on cancer risk.(8) A recent study, funded by the National Institutes of Health's National Institute on Drug Abuse, which involved 1200 people who had lung, neck or head cancer and an additional 1,040 people without cancer matched by age, sex and neighborhood, found that even the very heavy marijuana smokers showed no increased incidence of the three cancers studied.(9)


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