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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    Vitamin D and high blood pressure in African-Americans

    Higher prevalence of hypertension among African Americans is a key cause of racial disparity in cardiovascular morbidity and mortality.

    Researchers in New York and California assessed the contribution of vitamin D to racial disparity in blood pressure.

    First, the details.

    • 1984 non-Hispanic Black and 5156 White adults were studied.
    • Differences in systolic blood pressure after controlling for conventional risk factors, and then additionally, for vitamin D (25[OH]D blood levels) were recorded.

    And, the results.

    • The average age-sex adjusted Black-White systolic blood pressure difference was 5.2 mmHg.
      • This difference was reduced to 4.0 mmHg with additional adjustment for socio-demographic characteristics, health status, health care, health behaviors, and biomarkers.
      • Adding 25(OH)D reduced the race difference by 26% to 2.9 mmHg.
    • This effect increased to 39% when those on antihypertensive medications were excluded.

    The bottom line?

    The authors concluded, “25(OH)D explains one quarter of the Black-White disparity in systolic blood pressure.”

    They recommend more study to determine whether vitamin D supplementation might reduce racial disparity in blood pressure.

    The overall prevalence of hypertension is 25%. In non-Hispanic Blacks the prevalence is 31% vs 24% in non-Hispanic Whites — a significant difference.

    5/2/11 20:21 JR

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