A new study in Pediatrics journal finds children with a condition known as sleep-disordered breathing are significantly more likely to develop behavioral problems by the time they are seven, including depression and anxiety.
The mother of a two-year-old said her son was frequently in a bad mood, until she took him to a specialist.
A sleep study determined he snored and breathed through his mouth.
Doctors found enlarged tonsils and adenoids were causing the sleep disorder.
When they were removed the mother said her son was a different child.
Obesity is another common cause of sleep disordered breathing.
It's estimated 10 percent of children snore and 4 percent have sleep apnea.