Safe Sleep for Newborns: Guidance for Canadian Families

The short answer: for every sleep — naps and nights — place your baby on their back, on a firm, flat mattress with only a fitted sheet, in a crib, cradle or bassinet in your room for the first six months. This is the current guidance from the Canadian Paediatric Society and the national Joint Statement on Safe Sleep.

None of this needs special products. Most of safe sleep comes down to what you leave out of the crib.

Why safe sleep guidance exists

Sudden infant death syndrome (SIDS) is the sudden, unexplained death of a seemingly healthy baby under one year old during sleep. Its exact causes are still unknown, so it cannot be fully prevented — but some risks can be lowered. According to the Joint Statement on Safe Sleep, SIDS peaks between 2 and 4 months of age, and the most important risk factors parents can change are tummy sleeping and exposure to tobacco smoke, both during pregnancy and after birth.

Sleep-related deaths also include accidental suffocation or strangulation in bed, which is why the sleep environment matters as much as position.

The safe sleep checklist

The Canadian Paediatric Society recommends:

• Back to sleep, every sleep. Naps, nights, at home, at a grandparent's, and when travelling.
• A firm, flat mattress with a tightly fitted sheet and no gaps between the mattress and the sides.
• Nothing else in the sleep space: no blankets, pillows, bumper pads, mattress toppers, sleep positioners or toys.
• A crib, cradle or bassinet that meets Health Canada's current safety standards, assembled and used according to the manufacturer's instructions.
• A smoke-free home, before and after birth — including no smoking or vaping around your baby.
• No overheating. A fitted one-piece sleeper is usually enough; babies do not need blankets.
• Nothing around the neck or head: remove bibs, necklaces, hats, and clothing with ties or hoods before sleep.

Room sharing for the first six months

Room sharing means your baby sleeps in their own safe sleep space, placed next to your bed. The CPS recommends it for the first six months, the period when SIDS risk is highest, and notes it also makes night feeds easier (CPS).

Bed sharing: what Canadian guidance says

Room sharing is encouraged, but bed sharing — a baby sleeping on the same surface as an adult or another child — increases the risk of SIDS and suffocation. A baby can become trapped against a wall or bedframe, be rolled onto, or have soft bedding cover their head. In-bed products such as baby nests or pods do not make bed sharing safe; their padded sides add suffocation risk (CPS).

An adult bed is not a recommended safe-sleep surface and is not equivalent to a crib, cradle or bassinet that meets Canadian safety regulations. Removing bedding or choosing a firm mattress does not make bed sharing safe (Joint Statement on Safe Sleep).

Exhausted parents can doze while feeding without intending to. Falling asleep with an infant on a sofa or armchair is especially dangerous: these soft surfaces add suffocation and entrapment risks. Do not use them as a place to sleep with your baby. The national guidance also identifies greater bed-sharing risks with extreme tiredness, smoking, alcohol, drugs or medicines that cause drowsiness, and for babies under four months or born preterm or with low birthweight (Joint Statement on Safe Sleep).

As harm reduction — not a recommendation to bed share — the CPS advises parents who may share a surface, even unintentionally, to keep baby on their back, avoid gaps and soft loose bedding or other objects near baby, and avoid overheating. These precautions do not remove the risk or make an adult bed a safe infant sleep space. If you feed in your bed, return baby to their own crib, cradle or bassinet after the feed; if you doze, return them as soon as you wake. Discuss fatigue and safer feeding arrangements with your healthcare provider (CPS; Health Canada).

Waterbeds and air mattresses are also not safe for infant sleep (Health Canada).

Swaddling, sleep sacks and carriers

• Swaddling: if you choose to swaddle, use a safe technique and stop as soon as your baby shows signs of rolling over.
• Sleep sacks: choose the right size. Too big and your baby's head can slip inside; too tight and their hips and legs cannot move freely.
• Slings and carriers: keep your baby's face visible and not pressed into your body, clothing or the carrier. Young and premature babies have poor neck control and are at higher risk.

All three points come from the Canadian Paediatric Society.

Products and places not recommended for sleep

The CPS lists these as not recommended for safe sleep:

• Bedside sleepers that attach to an adult bed
• Baby nests or pods
• Inclined sleepers, baby hammocks, and crib wedges or positioners
• Car seats, strollers, swings, bouncers and high chairs — sitting up can let a baby's head fall forward and make breathing harder

If your baby falls asleep in the car seat or stroller, move them to their crib, cradle or bassinet when you arrive (CPS).

Playpens and bassinet attachments are not the same

Playpens themselves are not regulated for infant sleep in Canada and do not meet the same sleep-safety requirements as cribs, cradles or bassinets. The national Joint Statement discusses their use only as a temporary sleep space while travelling: set the playpen up securely according to the manufacturer's instructions, never add an extra mattress or padding, keep it free of soft items, bedding and toys, and position it away from blind/curtain cords and electrical cords. This is not a recommendation to use a playpen as a routine infant sleep space (Joint Statement on Safe Sleep; CPS).

A bassinet attachment for a playpen that meets current Canadian safety regulations is different: Health Canada includes it among the recommended sleep spaces. Use only the compatible attachment as instructed by the manufacturer, and stop using it when baby starts rolling over or reaches its weight limit, or any earlier manufacturer limit. Do not assume the playpen's main floor or any accessory is a compliant bassinet (Health Canada; Joint Statement on Safe Sleep).

Common myths, briefly

• "Babies who spit up should sleep on their side or tummy." Back sleeping is still safest; healthy babies naturally swallow or cough up fluids (CPS).
• "A warm blanket helps them sleep." Blankets are not needed and add risk of overheating and suffocation. A properly fitted sleeper or sleep sack is safer.
• "Once they roll, I have to keep flipping them back." Once your baby can roll over on their own, you do not need to return them to their back if they roll during sleep — but continue to place them on their back.
• "Bumper pads make the crib safer." They are on the list of soft items to keep out of the sleep space.

Breastfeeding and smoke-free homes

The CPS notes that breastfeeding helps protect against SIDS, with greater protection the longer it continues, and that being smoke-free before and after birth lowers risk (CPS). Feeding choices are personal and not always in a parent's control; the sleep-space steps above protect every baby, however they are fed.

How safe sleep fits with overnight support

Every family's nights look different, and safe sleep can feel hardest when you are most tired. At Fiat Mater, overnight care follows the same back-to-sleep, bare-crib guidance described here, and Rebeca brings baby to you for feeds and settles them back into their own sleep space afterwards. You can read more about what an overnight postpartum doula does.

When to get medical help

This article is general information, not medical advice. Talk to your doctor, midwife or nurse practitioner about questions specific to your baby, especially if your baby was born early or has a health condition. In Ontario, you can call Health811 any time for free advice from a registered nurse (Health811). If your baby is having trouble breathing, is unusually difficult to wake, or you are worried it is an emergency, call 911.