Regular snoring in babies can be a danger sign

McIntosh noted that if the signals to the brain indicate that something is wrong, the brain can alter the rate of breathing to compensate. “The problem of airway obstruction (which is what happens when you are snoring) though is that even if the brain recognises there is a problem, increasing the effort of breathing achieves very little,” he added. “Furthermore, blockage to breathing results in oxygen levels in the blood dropping. This is something the brain does not like very much.” 

Through his research and through observing children who habitually snore, McIntosh has seen evidence of reduced attention, higher levels of social problems and anxiety, depressive symptoms, cognitive dysfunctions, memory problems and problems with thinking through things logically.

In a much larger study conducted, which monitored 1,000 children over a period of six years, it was found that children who snored, breathed through the mouth, or had sleep apnoea (temporary cessation of breathing) had a higher incidence of the behavioural issues listed above, and were 50 to 90 percent more likely to develop ADHD-like symptoms than normal breathers.