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, 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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    If you found the information here helpful, please consider supporting this site.If you found the information here helpful, please consider supporting this site.

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    Cannabis and psychosis in adolescence

    In the largest unselected, population-based study on this topic to date, researchers from Finland observed “Cannabis use is associated with prodromal symptoms of psychosis in adolescence.”

    First, the details.

    • In 6330 adolescents, marijuana use and prodromal symptoms of psychosis were recorded at age 15–16 years.
    • Examples of prodromal symptoms
      • Feeling like something strange or inexplicable was taking place
      • Suspecting they were being influenced or followed
      • Difficulty in controlling the speed of thoughts

    And, the results.

    • Those who tried cannabis (about 6% of the total) were more likely to show 3 or more prodromal symptoms even after controlling for confounders including previous behavioral symptoms.
    • More smoking was associated with more symptoms.

    The bottom line?
    Teenage cannabis users are more likely to suffer psychotic symptoms that raise the risk of full-blown mental illness in later life.

    6/9/08 21:28 JR

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