Snoring in Children
As first published by the Sleep Foundation.
Sleep is vital for childhood development, so it’s no surprise that many parents worry if they hear their child snoring.
Even though snoring is most common among older adults, it occurs in many children as well. It can have many causes, some of which cause snoring to come and go and others that are potentially long-lasting.
Snoring in children is often of little concern, especially if it only happens every once in a while. But if snoring is frequent or severe, it may signal a problem of disturbed breathing during sleep.
Knowing more about the types, causes, consequences, and treatments of snoring in children can allow parents to best look out for the health of their children and help kids get better, more restorative sleep.
Is All Snoring in Children the Same?
Not all snoring in children is the same. The frequency, severity, and impact of snoring in children can vary significantly.
Almost anyone, adults or children, has an occasional episode of snoring. Most of the time, this snoring is minor and short-lived with no measurable effect on the person’s sleep or overall health.
When snoring becomes more frequent and interrupts sleep, it can indicate the presence of sleep-disordered breathing (SDB). Sleep-disordered breathing ranges in seriousness.
On one end is primary snoring, also known as simple snoring or habitual snoring, when a child snores more than two times per week but does not have other noticeable symptoms or associated health issues.
On the other end is obstructive sleep apnea (OSA), a condition marked by constant lapses in a child’s breath during the night. Those lapses, called apneas, occur dozens of times per night when the airway becomes blocked. OSA can cause fragmented sleep and is connected with negative impacts on physical health, mental health, learning, and behavior.
How Common is Snoring in Children?
Minor, occasional snoring is believed to occur in up to 27% of children. This type of light, temporary snoring does not usually raise health concerns.
Primary snoring without other symptoms is thought to affect between 10 and 12% of children. Studies estimate that 1.2-5.7% of children have obstructive sleep apnea. Of children diagnosed with sleep-disordered breathing, around 70% receive a diagnosis of primary snoring.
It is hard to determine exact statistics for snoring and sleep apnea. Parents may not always observe their child’s snoring or be aware of its frequency and severity. In addition, detailed testing for sleep apnea, known as polysomnography, may not be available, affordable, or practical in all cases.
What Causes Snoring in Children?
Snoring happens when air cannot flow freely through the airway at the back of the throat. As a person inhales or exhales, tissue around the airway vibrates, creating an audible noise.
Multiple factors can create blockages of the airway and cause a person to snore. In children, the most common risk factors for snoring include:
- Large or swollen tonsils and adenoids: The tonsils and adenoids are found near the back of the throat, and they are part of the body’s immune system. If they are naturally larger or are swollen because of infection, the tonsils and adenoids can obstruct the airway and cause snoring. This is the most common cause of sleep-disordered breathing in children.
- Obesity: Studies have found that children who are overweight are more likely to snore. Obesity can narrow the airway and raise the risk for SDB including obstructive sleep apnea.
- Congestion: Cold-like symptoms can cause congestion that blocks the smooth flow of air, and infection may inflame the tonsils and adenoids.
- Allergies: Flare-ups of allergies can cause inflammation in the nose and throat that can make it harder to breathe and raise the risk of snoring.
- Asthma: Like allergies, asthma may inhibit normal breathing, and if it causes partial blockages of the airway, can provoke snoring.
- Anatomic characteristics: Some people have anatomic characteristics that make it harder for them to breathe normally when sleeping. For example, a deviated septum, in which the nostrils are not separated equally, may cause mouth-breathing and snoring.
- Environmental tobacco smoke (ETS): Exposure to ETS, often referred to as secondhand smoke, can affect breathing and has been correlated with a higher risk of snoring in children.
- Contaminated air: Low air quality or excess contaminants can pose a challenge to normal respiration and may influence a child’s chances of frequent snoring.
- Shorter duration of breastfeeding: Research has found an association between snoring in children and reduced duration of breastfeeding. The exact reason for this is unknown, but it may be that breastfeeding helps the upper airway develop in a way that cuts down on the likelihood of snoring.
Obstructive sleep apnea is another important risk factor for childhood snoring. It is typical for children with obstructive sleep apnea to snore, including with gasp-like pauses in breath. While most children with OSA snore, not all children who snore have OSA.
Is Snoring in Children Dangerous?
Infrequent snoring in children is not usually dangerous, but regular or severe snoring that is indicative of sleep-disordered breathing can have significant health consequences.
Of the greatest concern is obstructive sleep apnea. OSA causes major sleep disturbances and affects the amount of oxygen a child receives during sleep. It has been connected to impaired brain development, reduced academic performance, cardiovascular issues like high blood pressure, altered metabolism, and behavior problems.
On the whole, it is clear that OSA can seriously affect a child’s quality of life. The impacts of OSA have been studied primarily in older children, but researchers believe that they also extend to young kids, such as 2-3 year-olds.log
Traditionally, primary snoring that did not rise to the level of OSA was thought of as benign, but recent research has indicated that habitual snoring also carries health risks. Issues of cognitive impairment and behavior problems have been found to occur more in children with primary snoring than in those who never or rarely snore. Regular snoring may affect the nervous system and have negative effects on cardiovascular health.
Though studies have found a link between habitual snoring and health problems, the exact explanation is unclear. It may be that sleep-disordered breathing, even when it is not OSA, can cause small disturbances that affect sleep quality. Further research is necessary to better understand the ways that primary snoring affects children of different ages.
Beyond the immediate health effects, snoring can also be disruptive to the sleep of parents or to siblings who share a room with a child who snores. If the snoring is especially loud, it may cause others to wake up, leading to more fragmented sleep for others in a child’s family.