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Kids' Snoring Linked to Behavioral Problems

Researchers Say Parents and Doctors Need to Pay Closer Attention to Breathing During Sleep
By Rita Rubin
WebMD Health News
Reviewed by Laura J. Martin, MD

March 5, 2012 -- The more young children snore, breathe through their mouths, or stop breathing while asleep for a few seconds at a time, the more likely they are to develop behavioral problems, a new study shows.

Previous research had suggested a link between these “sleep-disordered breathing” symptoms and such problems as hyperactivity, but the authors of the new study say theirs is by far the largest and most comprehensive of its kind.

The researchers followed more than 11,000 children in an ongoing study in southwest England. The study enrolled pregnant women who were due to deliver between April 1991 and December 1992.

For the latest findings, researchers asked parents to fill out questionnaires about their children’s snoring, mouth breathing, and apnea, which refers to abnormal pauses in breathing while asleep. The questionnaires were completed when the children were 6, 18, 30, 42, 57, and 69 months of age. When their children were 4 and 7 years old, the parents were asked to complete questionnaires about their children’s behavior.

Sawing Wood, Suffering Consequences

About 45% of the children breathed just fine while asleep, according to their parents. Of the rest, the “worst case” children had elevated levels of all three breathing symptoms at 30 months of age, says researcher Karen Bonuck, PhD, a professor of family and social medicine and of obstetrics and gynecology and women’s health at Albert Einstein College of Medicine in New York.

After accounting for 15 other factors linked to behavioral problems, such as low birth weight and mom’s education, Bonuck’s team found that children with sleep-disordered breathing were 40% to 100% more likely to experience behavioral problems at age 7 than children without breathing problems.

The worse their breathing symptoms, the greater their risk of such problems as hyperactivity, behavioral problems including aggressiveness and rule-breaking, anxiety and depression, and difficulty getting along with peers.

Despite the research linking snoring to behavioral problems, more than half the parents surveyed at one hospital’s primary care clinic said they thought it was a sign of healthy sleep in children, according to a report last year in the Journal of Developmental and Behavioral Pediatrics.

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