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    Obese people may under-report calorie intake by 50%, lean people by as much as 20%


    Posted by .(JavaScript must be enabled to view this email address)
    Wednesday, March 28, 2007 2:35 am Email this article
    Obese people may under-report their calorie intake by as much as 50 percent, that is, saying that they only eat half as much as they really do according to one paper. However, studies have found that even lean people may under-report their calorie intake by as much as 20 percent.

    “Because the greatest bias was observed in obese subjects, current methods for self-reported energy intake are not recommended for use in obesity research,” the 1990 paper concluded.

    Comment

    Comment: Beware of studies that use self-reported intake

    Beware of studies that use self-report intake, which is a majority of weight loss studies.

    I assume that it is obvious, but this is the reason that most of the time diets don’t work—because people don’t follow them.

    If you tell someone to eat a 1200 calorie per day diet, but instead they eat twice this much, they will not lose the weight that they expect.

    REFERENCE

    Schoeller D. Limitations in the assessment of dietary energy intake by self-report. Metabolism. 1995 Feb, 44(2 Suppl 2):18-22.

    AUTHOR’S CONTACT INFORMATION

    Department of Human Nutrition and Nutritional Biology
    University of Chicago, IL 60637, USA

    OTHER REFERENCE

    Schoeller D, Bandini L, Dietz W. Inaccuracies in self-reported intake identified by comparison with the doubly labelled water method. Can J Physiol Pharmacol. 1990 Jul, 68(7):941-49.

    AUTHOR’S CONTACT INFORMATION

    Committee on Human Nutrition and Nutritional Biology
    University of Chicago, IL 60637, USA

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