Baby Sleep Safety: Guidelines Every Parent Should Know

Safe sleep is the most important aspect of baby sleep — more important than schedules, routines, or training methods. Every year, approximately 3,400 infants in the United States die from sleep-related causes, including SIDS (Sudden Infant Death Syndrome), accidental suffocation, and strangulation. The vast majority of these deaths are preventable.

The guidelines in this article are based on the American Academy of Pediatrics (AAP) safe sleep recommendations, which are backed by decades of research. Following these guidelines significantly reduces your baby's risk.

We know this topic can feel scary. Our goal is not to frighten you but to empower you with clear, actionable information so you can create the safest possible sleep environment for your baby.

The ABCs are the foundation of safe sleep. Every sleep — every nap, every night — should follow these principles:

A — Alone

Your baby should sleep in their own space — a crib, bassinet, or play yard that meets current safety standards. Bed sharing (sleeping in the same bed as an adult) increases the risk of suffocation and SIDS. This applies to all sleep surfaces: adult beds, couches, armchairs, and recliners are not safe sleep surfaces for babies.

B — Back

Always place your baby on their back to sleep. Back sleeping reduces SIDS risk by more than 50% compared to stomach sleeping. Place your baby on their back for every sleep until they can consistently roll in both directions (usually around 4–6 months). Once they can roll freely, you do not need to reposition them if they roll onto their stomach during sleep.

C — Crib

Your baby's sleep surface should be firm, flat, and bare. Use a mattress specifically designed for the crib or bassinet with a tightly fitted sheet. Nothing else should be in the crib: no pillows, blankets, bumpers, stuffed animals, positioners, or wedges. A bare crib may look stark, but it is the safest environment for your baby.

The AAP recommends room sharing without bed sharing for at least the first 6 months, ideally the first 12 months. This means your baby sleeps in their own crib or bassinet in your bedroom, close to your bed but on a separate surface.

Room sharing has been shown to reduce SIDS risk by up to 50%. The reasons are not entirely clear, but it likely involves parental awareness (you hear your baby stir and can respond quickly) and the regulatory effect of being near an adult (your breathing patterns may help regulate your baby's).

Bed sharing (also called co-sleeping, though this term is sometimes used for room sharing too) is different. Having your baby sleep in an adult bed increases the risk of suffocation, overheating, and entrapment. This risk is especially high when:

• The adult is extremely tired, has consumed alcohol, or has taken sedating medication
• The bed has soft bedding, pillows, or gaps where the baby could become trapped
• The baby is under 4 months old
• The baby was born prematurely or at a low birth weight
• Anyone in the bed is a smoker

We understand that bed sharing sometimes happens unintentionally, especially during nighttime feeds. If you think you might fall asleep while feeding, the safest place to do it is on a firm bed (not a couch or armchair) with pillows and blankets removed from around the baby. Move the baby back to their own sleep space as soon as you wake.

Swaddling can be a wonderful tool for calming newborns and improving sleep. It mimics the snug feeling of the womb and reduces the startle reflex that wakes babies. However, swaddling must be done safely:

• Always place a swaddled baby on their back. A swaddled baby who rolls to their stomach cannot use their arms to reposition and is at high risk of suffocation.
• Stop swaddling when your baby shows signs of rolling. This typically happens around 3—4 months. If your baby can roll in either direction, swaddling is no longer safe.
• Do not over-tighten. The swaddle should be snug around the arms and chest but loose around the hips. Tight swaddling of the legs can cause hip dysplasia.
• Watch for overheating. A swaddled baby needs less clothing underneath. Feel the back of your baby's neck — it should be warm, not sweaty.
• Transition to a sleep sack. When it is time to stop swaddling, a wearable blanket (sleep sack) provides warmth without the suffocation risk of a loose blanket.

In addition to the ABCs, these evidence-based strategies further reduce the risk of SIDS:

• Offer a pacifier at sleep time. Pacifier use during sleep has been consistently associated with a reduced risk of SIDS. If you are breastfeeding, wait until breastfeeding is well-established (usually 3—4 weeks) before introducing a pacifier. If the pacifier falls out after your baby is asleep, you do not need to replace it.
• Do not smoke. Parental smoking (during pregnancy and after birth) is one of the strongest risk factors for SIDS. If you smoke, keep it away from the baby and their sleep environment.
• Avoid overheating. Dress your baby in one layer more than you would wear. Keep the room at 68–72°F (20–22°C). Signs of overheating include sweating, damp hair, flushed cheeks, and rapid breathing.
• Keep up with vaccines. Research shows that immunized babies have a lower risk of SIDS.
• Provide tummy time when awake. Supervised tummy time builds neck and upper body strength, which helps your baby develop the motor skills to move their head if their airway becomes blocked.
• Avoid products that claim to reduce SIDS. Heart and breathing monitors, special mattresses, and positioners have not been shown to reduce SIDS risk and may create a false sense of security.

Use this checklist when setting up your baby's sleep space:

• Crib/bassinet: Meets current CPSC safety standards. Check for recalls at cpsc.gov.
• Mattress: Firm and flat. Fits snugly in the crib with no gaps (you should not be able to fit more than two fingers between the mattress and the crib side).
• Sheet: One fitted sheet, tightly secured. No loose sheets or blankets.
• Sleep sack: Appropriate size and TOG rating for the room temperature.
• Room: Dark, cool (68–72°F), with white noise if desired.

Items that should NOT be in the sleep space:

• Pillows
• Blankets, quilts, or comforters
• Crib bumpers (including mesh ones)
• Stuffed animals or loveys (until at least 12 months, per AAP guidelines)
• Sleep positioners or wedges
• Loose clothing or bibs

When you are tracking your baby's sleep with Taika, you can feel confident that your sleep environment is set up for both safety and success. The app focuses on helping you optimize schedules and routines within a safe sleep framework.

If safe sleep guidelines feel overwhelming, remember that the single most impactful thing you can do is place your baby on their back, in their own crib, on a firm surface, with nothing else in the sleep space. If you do just that, you have dramatically reduced the risk.

If you have concerns about your baby's breathing, sleeping patterns, or safety, talk to your pediatrician. They can evaluate your baby and address any specific risk factors.

If you are struggling with sleep deprivation and feel tempted to bring your baby into an unsafe sleep situation (like a couch or armchair), please ask for help. Call a partner, family member, friend, or postpartum support line. A few hours of support from someone else can prevent a dangerous situation.

You are doing an incredible job by educating yourself about safe sleep. Your baby is lucky to have a parent who cares this much.