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    Glycemic Load is not associated with body fat, belly fat or BMI


    Posted by .(JavaScript must be enabled to view this email address)
    Tuesday, September 20, 2005 7:20 am Email this article
    A diet containing a high glycemic load is not associated with body fat, belly fat or body mass index (BMI) in older men or women according to a new study from researchers at the University of Maryland and others. No significant difference in BMI in men

    The one-fifth of men who ate diets with the highest glycemic load had exactly the same BMI (26.7) as the one-fifth of men with the lowest.

    No significant difference in BMI in women

    The one-fifth of women who with the highest glycemic load had a slightly lower BMI than women with the lowest (27.1 versus 27.4), although the difference was not statistically significant, meaning that this could have been due to random chance.

    No significant difference in body fat in men

    The men with the highest glycemic load had slight less body fat than men with the lowest (27.6 percent versus 28.2 percent), although the difference was not statistically significant.

    No difference in body fat in women

    Women with the highest glycemic load had a similar amount of body fat as women with the lowest (39 percent versus 39.3 percent), although the difference was not statistically significant.

    No significant difference in belly fat in men

    There was no significant difference in the amount of belly fat between men with the highest glycemic diet and those with the lowest (150 square centimeters versus 153 sq cm).

    No difference in body fat in women

    Women in the highest glycemic group had the same amount of body fat as women the second to lowest group (124 sq cm), however, those in the lowest glycemic group had slight less belly fat than those in the highest (119 versus 124 sq cm), however, the difference was not statisically significant.

    No difference in fasting blood sugar levels

    Fasting blood sugar levels were the same in both men with the highest glycemic intake versus those with the lowest (96.5 versus 96.9 mg/dL), as was the case with women (91.4 versus 91.9 mg/dL).

    Fasting insulin levels higher in men eating the highest glycemic diet, but not in women

    Fasting insulin levels were the same in women with the highest glycemic intake versus those with the lowest (6.9 uU/mL), however, in men, those who consume the highest glycemic load had higher fasting insulin levels than those who consumed the lowest (7.2 versus 6.1 uU/mL).

    Comment: Glycemic Load not as important as we thought

    This study suggests to me that glycemic load may not be as important, or for that matter, may not be important at all, with regards to body weight or body fat.

    REFERENCE

    Sahyoun NR, Anderson A, Kanaya A, Koh-Banerjee P, Kritchevsky S, De Rekeneire N, Tylavsky F, Schwartz A, Lee J, Harris T. Dietary glycemic index and load, measures of glucose metabolism, and body fat distribution in older adults. Am J Clin Nutr. 2005 Sep, 82(3):547-52.

    AUTHOR’S CONTACT INFORMATION

    Department of Nutrition and Food Science
    University of Maryland
    College Park, MD

    Department of Epidemiology
    University of California, San Francisco
    San Francisco, CA.

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