Childhood: Obesity Linked to Sleep Disorder

Childhood obesity may have yet another dangerous consequence: disordered breathing during sleep.

Researchers had 700 children spend a night in a sleep lab where they were evaluated using a polysomnograph, an instrument that measures sleep quality and breathing function. They also underwent a physical examination by an ear, nose and throat specialist. The children were randomly selected from the community, and none were being treated for sleep problems.

About a quarter of the children had mild or moderate sleep-disordered breathing. Tonsil size was not associated with disordered breathing, and nasal abnormalities were a factor only in mild cases. But waist circumference and body mass index were strong independent risk factors for snoring and other breathing problems during sleep.

This, the authors write in the June issue of the journal Sleep, suggests that the well-known effects of excess weight may be an important factor in sleep-disordered breathing in children, just as they are in adults.

“This is another red flag related to obesity, another reason to be concerned,” said Edward O. Bixler, a professor of psychiatry at Penn State who led the research. “The metabolic issues in adults associated with obesity are now beginning to be found in younger children.”