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The World in Medicine
February 17, 2010

Sleep and Children

JAMA. 2010;303(7):603. doi:10.1001/jama.2010.152

Young children who sleep 8 hours or less nightly have an increased risk of hyperglycemia, according to a population-based cross-sectional study by researchers in China and the United States (Tian et al. Arch Pediatr Adolesc Med. 2010;164[1]:46-52).

The study involved 619 obese and 617 nonobese children aged 3 to 6 years from 71 randomly selected kindergartens in Tianjin, China. About 47% of the obese children and 37% of the nonobese children averaged 8 or fewer hours of sleep per night; such children had a significantly higher likelihood of hyperglycemia (defined as a fasting glucose of 100 mg/dL or higher) than those who slept for 9 or 10 hours nightly (odds ratio of 1.65), even after adjustment for potential confounders. The risk of hyperglycemia was even greater among those who were obese and slept 8 hours or less compared with children who were nonobese and slept at least 9 hours (odds ratio of 2.12).

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