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Does white noise help babies sleep or is it a risk?

White noise can genuinely help some babies fall asleep faster and cry less, but many white noise machines can be played loud enough to risk babies' hearing if used incorrectly.

The safety concern is about volume and distance, not about white noise itself, so the fix is using it correctly rather than avoiding it entirely.

Strength of evidence

Mixed

Benefits come from a mix of small randomized trials and older studies; the hearing risk comes from acoustic measurement studies and a scoping review of mostly observational and animal research, not long-term trials on hearing outcomes in humans.

What the evidence says

White noise is a steady, calming sound, like a fan or static. Studies have found it can help newborns fall asleep faster and can reduce crying time in babies with colic, which is a lot of unexplained crying. So there is real evidence it can help settle a fussy baby.

The catch is volume. Doctors have measured many white noise machines and found some can get loud enough, especially at their highest setting, to match or exceed noise levels considered risky for adult ears over a workday. Babies' ears and hearing are still developing, so loud continuous sound is a bigger concern for them than for adults.

The American Academy of Pediatrics looked at this and said some studies show benefits from sleep machines, but one study raised concerns about how loud these devices can get. Their advice is not to avoid white noise, but to use it carefully.

Practical safety tips from health experts: keep the device far from the crib, at least an arm's length or more away, keep the volume as low as possible while still being useful, and do not run it all night at high volume right next to the baby's head. Some sources also note a baby might get used to needing the sound to fall asleep, though this is a minor issue compared with hearing safety.

We did not find specific Canadian government or Canadian Paediatric Society guidance on white noise machines themselves. The safety advice here comes from American pediatric and hearing research, but it lines up with general Canadian safe sleep advice to keep cords, cribs and devices set up carefully around a sleeping baby.

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 August 8, 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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