MONDAY, Jan. 24 (HealthDay News) -- Sleeping in on the weekend may help children fight obesity, a new study suggests.
Too little sleep puts kids at risk of obesity and other health conditions, but "catch-up" sleep on weekends and holidays can mitigate the effects of weekday sleep deprivation, researchers say.
"In the United States, the sleep of our children is clearly not enough," said lead researcher Dr. David Gozal, chair of pediatrics at Comer Children's Hospital at the University of Chicago.
Gozal's team monitored the sleep patterns of 308 children for a week and compared their sleep patterns with their body mass index (BMI), which is a measurement that takes into account height and weight. The children, who were 4 to 10 years old, averaged eight hours of sleep a night.
"This is way lower than the recommended amount of sleep that kids should get, which is about 9.5 to 10 hours at this age," Gozal said.
Among the children who got the recommended amount of sleep, the risk of obesity, diabetes and cardiovascular problems was nil, Gozal said.
"But, as the amount of sleep became shorter and the regularity of sleep became less organized, the risk for obesity increased," he said.
"Kids who had the shortest sleep and had a more disorganized sleep schedule had more than a fourfold increase in the risk of being obese," he noted.
These children also had increased risk for cardiovascular problems and pre-diabetes, Gozal said.
However, if these children consistently slept longer on weekends to compensate, the risk for obesity and metabolic problems was reduced to a 2.8-fold increase. "It did not normalize it. It's still a risk but not as much as keeping your crazy short sleep schedule even during weekends," Gozal said.
It is this combination of less sleep and irregular sleep that appears to result in metabolic problems, such as high b
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