Most cases of sleep apnea in babies cannot be entirely prevented, because the primary causes are developmental factors like prematurity and airway anatomy that parents don’t control. But several meaningful steps can lower your baby’s risk or catch problems early enough to treat them before they cause harm. A breathing pause lasting 20 seconds or longer, or a shorter pause paired with a drop in heart rate, turning blue, or going limp, is the clinical threshold for infant apnea.
Understanding which type of apnea your baby might be at risk for helps you focus on the right strategies. Central sleep apnea, where the brain temporarily stops signaling the body to breathe, affects somewhere between 1 in 1,000 and 5 in 100 healthy children. Obstructive sleep apnea, where something physically blocks the airway, is driven more by anatomy and environment. The prevention approaches differ for each.
Why Prematurity Is the Biggest Risk Factor
Premature birth is the strongest predictor of sleep apnea in infancy and early childhood, and the earlier the baby arrives, the higher the risk. Babies born before 32 weeks of gestation are nearly three times as likely to be diagnosed with sleep apnea compared to full-term babies. For those born before 27 weeks, the risk climbs to almost four times higher. There’s a clear dose-response pattern: every additional week of gestation reduces the likelihood.
Interestingly, birth weight on its own doesn’t seem to matter much. Babies born small for gestational age have no increased risk compared to those born at an appropriate weight. The same is true for unusually large babies. It’s the maturity of the brain and respiratory system, not size, that drives the connection.
If your baby was born prematurely, this isn’t something you can reverse, but it’s important context. Premature infants are typically monitored in the NICU for apnea events before discharge, and your pediatrician should be aware of the elevated risk as your baby grows. Knowing this lets you watch for symptoms like pauses in breathing, gasping, or restless sleep with more urgency than you might otherwise.
Safe Sleep Positioning
The single most actionable thing you can do at home is set up the right sleep environment. The American Academy of Pediatrics recommends placing infants on their backs for every sleep, in their own sleep space with no other people. Use a crib, bassinet, or portable play yard with a firm, flat mattress and a fitted sheet. Nothing else belongs in there: no loose blankets, pillows, stuffed toys, or crib bumpers.
Avoid letting your baby sleep on a couch, armchair, or in a seating device like a swing or car seat (unless they’re actually riding in the car). These positions can allow the head to slump forward, narrowing or closing the airway. A firm, flat surface keeps the airway aligned and open.
Keep Smoke Away From Your Baby
Secondhand smoke exposure is one of the more preventable risk factors. A meta-analysis of 26 studies found that children exposed to secondhand smoke had an 84% higher risk of obstructive sleep apnea compared to unexposed children. Among kids who already had severe obstructive sleep apnea, smoke exposure increased the severity of their breathing disruptions by 48%. That’s a substantial effect from a completely avoidable exposure.
This applies to anyone who smokes around the baby or in spaces where the baby sleeps, including residual smoke on clothing and furniture. If anyone in the household smokes, keeping it entirely outside and away from the baby’s environment is one of the most concrete prevention steps available.
Breastfeeding and Jaw Development
Breastfeeding may support upper airway development in ways that reduce the risk of sleep-disordered breathing later in childhood. The mechanics of breastfeeding require different muscle engagement than bottle feeding, and researchers believe this could influence how the jaw and airway structures grow. The exact mechanism is still being studied, but the association between breastfeeding and lower rates of childhood sleep-disordered breathing has been observed consistently enough that pediatric sleep researchers consider it a plausible protective factor.
This doesn’t mean bottle-fed babies are destined for problems. Many other factors matter more. But if breastfeeding is an option for you, it may offer a small additional benefit for airway development alongside its other well-documented advantages.
Tongue Ties and Airway Anatomy
Some babies have structural issues that make airway obstruction during sleep more likely. One increasingly recognized factor is tongue tie (ankyloglossia), where restricted tongue movement affects both feeding and breathing. In a study of children who had tongue-tie releases paired with targeted exercises, 83% showed improvement in sleep, and 72% of those described as restless sleepers became noticeably less restless.
If your baby struggles with latching, makes clicking sounds during feeding, or seems to breathe loudly or restlessly during sleep, it’s worth having a pediatrician or pediatric dentist evaluate tongue function. Enlarged tonsils and adenoids are another common anatomical cause in older infants and toddlers, though these are less relevant in the newborn period.
Warning Signs to Watch For
Prevention also means catching apnea early when it does develop. During sleep, the signs to watch for include snoring (which is not normal in babies), pauses in breathing, gasping or choking sounds, snorting, mouth breathing, restless sleep, and unusual nighttime sweating. During the day, persistent mouth breathing or visible difficulty breathing through the nose can also signal a problem.
Frequent snoring alone is enough reason to bring it up with your pediatrician. Many parents assume light snoring is harmless in babies, but it can indicate partial airway obstruction that worsens during deeper sleep stages. A sleep study (polysomnography) is the gold standard for diagnosis, measuring airflow, breathing effort, oxygen levels, heart rate, and brain activity to distinguish between central and obstructive events.
Consumer Monitors Are Not Prevention
Many parents consider purchasing wearable baby monitors that track breathing or heart rate, hoping they’ll catch apnea events. The AAP has been clear on this point: home cardiorespiratory monitors should not be used as a strategy to reduce the risk of infant death. There is no evidence that consumer monitors are life-saving, and there is potential for harm if they create false reassurance or trigger unnecessary alarm from inaccurate readings.
The safety, accuracy, and effectiveness of these devices have not been established in a way that supports clinical recommendations. If your baby has known risk factors for apnea, medical-grade monitoring prescribed by a physician is a different matter entirely from a consumer product purchased online. The two should not be confused.