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

    This blog is 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 www.Vicus.com, 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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    Marijuana and the risk of motor vehicle accidents

    It’s the most commonly detected nonalcoholic drug in drivers.

    Researchers at Columbia University College of Physicians and Surgeons, in New York City, reviewed the evidence for its role in causing crashes.

    First, the details.

    • A meta-analysis of 9 epidemiological studies in the past 2 decades was conducted.

    And, the results.

    • People who tested positive for marijuana or reported having just used pot had more than twice the risk of being involved in a car crash compared to people who consumed no drugs (including alcohol).
    • A greater risk of crash involvement was associated with marijuana use even after adjusting for confounding variables.
    • The risk of crashing increased as the concentration of 11-nor-9-carboxy-delta-9-tetrahydrocannabinol in the urine increased, and as the frequency of self-reported marijuana use increased.

    The bottom line?

    The authors concluded, “Marijuana use by drivers is associated with a significantly increased risk of being involved in motor vehicle crashes.”

    10/17/11 7:50 JR

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