Study suggests link between kids' bedtime and weight

May 27, 2011

Lack of sleep has long been associated with increased body weight in adults. A study in the medical journal BMJ finds that also true of children.

Children aged three to seven were observed.

They slept an average of eleven hours a night, but the fewer hours of sleep they got the greater their risk of having a high BMI or body mass index.

Each additional hour of sleep per night was associated with a 61-percent reduction in the risk of being overweight.

Researchers suggest reduced sleep may increase food consumption and decrease physical activity during the day.

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