The C.A.M. Report
Complementary and Alternative Medicine: Fair, Balanced, and to the Point
  • About this web log

    This blog ran from 2006 to 2016 and was intended as an objective and dispassionate source of information on the latest CAM research. Since my background is in pharmacy and allopathic medicine, I view all CAM as advancing through the development pipeline to eventually become integrated into mainstream medical practice. Some will succeed while others fail. But all are treated fairly here.

  • About the author

    John Russo, Jr., PharmD, is president of The MedCom Resource, Inc. Previously, he was senior vice president of medical communications at, a complementary and alternative medicine website.

  • Common sense considerations

    The material on this weblog is for informational purposes. It is not medical advice or counsel. Be smart, consult your health professional before using CAM.

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  • Recent Comments

    Lack of a direct association between marijuana and lung cancer

    A newly published review in the Archives of Internal Medicine confirms what has been known since 1988. Epidemiological and clinical data do not show a direct cause and effect relationship between marijuana smoking and the development of lung cancer.

    Possible reasons that studies detect lung damage but not cancer in marijuana smokers include the young age of the smokers studied, the small number of people included in each study, and the lack of long-term monitoring.

    What was found in marijuana smokers included the following:

    • The lungs are exposed to tar (the solid residue of tobacco smoke containing byproducts of combustion)
    • The macrophage cells in the alveoli (the oxygen exchange cells) that should protect against noxious substances do not work properly
    • There is increased oxidative stress
    • Cells in the bronchi (the air passages) show an increase in abnormal and precancerous findings

    Since some bronchial cell changes appear to be precancerous, an increased risk of cancer among frequent marijuana smokers is possible.

    7/15/06 14:20 JR

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