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Does room-sharing actually reduce the risk of SIDS?

Yes. Multiple national guidelines agree that having your baby sleep in your room (in their own crib or bassinet, not your bed) for at least the first 6 months lowers SIDS risk, likely by around 50%.

Babies who sleep in a separate room have a notably higher risk of sudden unexpected death than those who room-share without bed-sharing.

Strength of evidence

Good

This is based on multiple case-control studies synthesized into national guidelines (Canadian and American), not randomized trials — an RCT isn't ethical for this question, so case-control evidence is the strongest available.

What the evidence says

Yes, the evidence supports room-sharing. The Public Health Agency of Canada and Canadian Paediatric Society state that infants who share a room with a parent or caregiver have a lower risk of SIDS, and recommend this for the first 6 months, which is when SIDS risk is highest. The American Academy of Pediatrics reaches the same conclusion, estimating that room-sharing without bed-sharing can lower SIDS risk by as much as 50%.

The protection seems to come from having the baby nearby (in their own crib or bassinet within arm's reach) rather than sharing your bed. AAP research found babies sleeping in a separate room had several times higher risk of sudden unexpected death compared to babies who were room-sharing on their own sleep surface.

Importantly, room-sharing is not the same as bed-sharing, and bed-sharing itself does not add extra protection — in fact it raises the risk, especially if a parent is very tired, smokes, or has used alcohol or drugs. Room-sharing works best combined with other safe sleep basics: back sleeping, a firm flat surface, and no soft bedding or loose items in the sleep space.

So the honest short answer: room-sharing (not bed-sharing) is one of the few sleep-environment changes with solid, consistent evidence behind it for lowering SIDS risk.

Sources

✓Reviewed by CH, MD, FRCPC

Reviewed by a specialist physician certified by the Royal College of Physicians and Surgeons of Canada, who has read this answer against the sources listed above and confirmed it reflects them. That is not medical advice about your child. How we review

Answer checked July 28, 2026

Educational information only. Not medical advice, not a diagnosis, and no doctor-patient relationship is created by using this. Founded Parent has not examined your child and does not know their history, so this may not apply to you. In an emergency, call your local emergency number. What Founded Parent cannot do

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