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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  • Recent Comments

    Review: Selenium, Vitamin E, and prostate cancer

     Dr. Eric Klein (photo) from the Cleveland Clinic Lerner College of Medicine, in Ohio has published a review.

    Here’s a historical perspective.

    1990s

    • Nutritional Prevention of Cancer study
      • Reported a reduction in prostate cancer risk with selenium (selenized yeast).
    • The Alpha-Tocopherol, Beta-Carotene Cancer Prevention study
      • Reported lower prostate cancer risk with vitamin E ({alpha}-tocopherol).
    • Chinese researchers
      • Selenium + vitamin E + beta-carotene reduced overall cancer mortality.
    • These finding were supported by epidemiological and lab studies.

    2000s

    • The Selenium and Vitamin E Cancer Prevention Trial (SELECT)
      • Neither selenium nor vitamin E showed benefits on major health outcomes.
    • Physicians Health II Study (PHS)
      • No benefit from long-term vitamin E on cancer or cardiovascular risk.

    The bottom line?
    Why the discrepancy in results?

    Dr. Klein discusses the potential confounding effects of dosing and diet on cancer risk. He then concludes that while SELECT and PHS were well-performed large-scale controlled studies, they didn’t validate what we believe biology indicates. It’s possible that “our model systems are imperfect measures of clinical outcomes in the real world.”

    3/3/09 20:47 JR

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