Is It Bad to Sleep With White Noise All Night?

For most adults, sleeping with white noise every night isn't bad for you, as long as it's quiet. Volume is the one thing that really matters. The other common worries (dependence, "worse" sleep, effects on the brain) are either minor or not well supported by evidence.

Here's each concern in turn.

The real risk: volume

Loud sound over long periods can damage hearing. Workplace safety guidelines treat around 85 decibels over an eight-hour day as the level where hearing protection becomes necessary, and a night's sleep is about as long as a working day.

The good news is that a sleep sound doesn't need to be anywhere near that loud. It only needs to sit a little above the background noise of your room.

A sensible target: under about 50 decibels, roughly the level of moderate rain or a quiet conversation. If you have to raise your voice to talk over it, it's too loud.

How to check: most phones can run a free sound-level app. Measure from your pillow, not next to the speaker.

Is it bad to have it right next to your head?

Distance matters more than people think. Sound gets quieter quickly as you move away from the source, so a speaker on the far side of the room is much gentler on your ears than one on the pillow.

• Put the speaker at least a metre or two from your head.

• Avoid sleeping in earbuds playing noise all night. If you need to, keep the volume very low.

Will I become dependent on it?

You might get used to it, in the same way you get used to your own pillow or a dark room. That's not the same as harmful dependence. If you travel or lose power, you may sleep worse for a night or two, but there's no evidence that using white noise damages your ability to sleep without it.

If it bothers you, you can always:

• Use a timer so the sound fades after you fall asleep.

• Lower the volume gradually over a few weeks.

• Keep a sound on your phone for travel, so it's never far away.

Does white noise make sleep worse?

The evidence on continuous noise and sleep quality is mixed. Reviews of the research have found limited, low-quality evidence that it improves sleep, and some researchers have raised the question of whether any constant sound, even a gentle one, might make sleep slightly lighter for some people.

What's well supported is narrower: a steady sound makes sudden noises less disruptive. If you live somewhere noisy, that benefit is real. If your bedroom is already quiet and you sleep well, you may not need it at all.

Is white noise safe for babies?

White noise is widely used for babies, and many parents find it helps. But babies' ears are more sensitive, and the guidance is stricter.

A 2014 study in the journal Pediatrics tested infant sleep machines and found that at their highest settings, several were loud enough to raise concerns about babies' hearing. The authors' advice was simple:

• Keep the machine well away from the cot, not inside it or on the rail.

• Use the lowest effective volume.

• Don't run it at full volume, and consider a timer.

If you have any questions about your own baby, ask your health visitor or paediatrician.

Is white noise bad for tinnitus?

Many people with tinnitus find a gentle background sound makes the ringing less noticeable at night. That's a common part of tinnitus management. If tinnitus is new or getting worse, see a doctor or audiologist.

Is white noise the best choice?

Not necessarily. White noise is bright and hissy, and many people find softer sounds easier to live with every night:

• Pink noise or steady rain is gentler on the ears.

• Brown noise, surf or a river covers low sounds like traffic and snoring better.

Our guide to brown vs white vs pink noise explains the differences, and the best sounds for sleep covers the alternatives.

The short version

• Quiet: under about 50 dB, measured at your pillow.

• Distance: speaker away from your head.

• Babies: lowest volume, machine well away from the cot.

• Optional: a timer if you only need help falling asleep.

Every sound in Sleep Sounds by Wonderland is recorded on location: a storm over the Dordogne Valley, a glacier river, the hum of the Bergen night ferry. Its sleep frequencies, white noise and brown noise, start from original recordings too. The white noise began as real FM radio static, then was developed and produced into a smooth sound for sleep. Set them low, mix them how you like, and leave them running.

FAQ

Can white noise damage your hearing?
Only if it's loud. At sleep-appropriate volumes (under about 50 dB), there's no good evidence of harm for adults.

Is it OK to sleep with white noise every night?
Yes, for most adults, as long as it's quiet and not right next to your head.

Can white noise cause headaches?
Some people find bright, hissy sounds tiring. If that's you, try a softer sound like rain or pink noise, or turn the volume down.