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  • Children who sleep less than 10 hours per day are 2.5 times more likely to be overweight

    Posted by .(JavaScript must be enabled to view this email address)
    Monday, July 19, 2010 8:44 am Email this article
    Children who sleep only 10.5 to 11.5 hours per day are 42 percent more likely to be overweight, and those who only get only 8 to 10 hours of sleep per day are 2.5 times more likely (245 percent more likely) to be overweight compared to children who sleep 12 to 13 hours per day according to a study from Laval University in Quebec, Canada. Sleep duration and appetite hormones

    Sleep duration affects leptin and grehlin

    “[S]leep duration seems to be important in the regulation of body weight and metabolism by the modulation of key hormones such as leptin and ghrelin,” the paper notes.


    Independent Risk Factor

    Lack of sleep independent risk factor for obesity

    “[T]he effect of sleeping hours on overweight/obesity in children appears to be independent of other risk factors,” the paper concluded.

    Leptin is a hormone released by fat cells which reduces appetite, whereas grehlin is a hormone that increases appetite.



    Subjects: 422 children

    The study involved 211 boys and 211 girls who were in the first, second or fourth grade.

    The average age of the children was 6.5 years old.


    Other Articles

    Other articles about the link between sleep and obesity

    A recent article found that lack of sleep is associated with higher body weight. It can be found here.

    Other articles about the link between lack of sleep and obesity can be found here.


    Chaput J, Brunet M, Tremblay A. Relationship between short sleeping hours and childhood overweight/obesity: Results from the ‘quebec en forme’ project. Int J Obes (Lond). 2006 Jul, 30(7):1080-85.


    Angelo Tremblay
    Division of Kinesiology
    Department of Social and Preventive Medicine
    Faculty of Medicine
    Laval University
    Ste-Foy, Quebec, Canada G1K 7P4
    .(JavaScript must be enabled to view this email address)


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