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Hang On to That White Noise Machine

I don’t know how many of you have been following the new season of True Detective, (Spoiler alert: It’s amazing) but there was a line in the last episode I saw where Mahershala Ali is talking to his son, and telling him how courageous he was before he became a parent.

“I did things some people might even call brave, but you made a coward of me. I’ve been terrified since the day you were born,” he tells him, revealing a truth I see in all parents, myself included.

It’s one thing to be fearless when it’s your own safety or well-being on the line, but once you have kids, the fear that something is going to happen to them can be absolutely paralyzing.

So when I saw the online buzz about a recent study in the Pediatrics Journal about the harmful effects of white noise machines, I felt my heart sink into my stomach.

Not only do I use a white noise machine with my own kids, but I’ve recommended them every single time I work with a client who were has issues with environmental noise waking their kids up during the day or early in the morning. So yeah, you could say I was freaked out. These were, after all, reputable news sources that were making these claims.

However, as is all too often the case, the headlines were inflammatory and misleading, and meant to scare parents into clicking on the headline. At least that was the feeling I got after reading the Please Don’t Throw Out Your White Noise Machine article and the study it was based on.

Now, I don’t have a degree in audiology, so I can’t claim to speak from a position of authority here, but I do know how to debunk a news story, and to me, this seems like more parental fear-stoking from the occasionally irresponsible media channels who like to start off with a scary headline, dive into all of the potential harm that something could be doing to your child, then throw a quiet one-liner into the last paragraph along the lines of, “Most experts agree that, if you employ the slightest modicum of common sense, this isn’t something you need to worry about,” and that certainly seems to be the case here.

So let’s unpack this story that’s been causing so many parents to toss their Dohms into the trash, shall we?

The article in USA Today starts off with the headline “Caution Urged for Infant Sleep Machines!” and by the second sentence, claims that a new study shows white noise machines, “could place infants at risk of developing noise-induced hearing loss.” The study they’re referring to tested 14 different machines and tested the volume of the noise they put out at different distances from the sound meter, mimicking the various locations in baby’s room that the machine might be located.

The results? All 14 machines exceeded 50 decibels at 100 centimeters from the sensor; 50 decibels being the recommended noise limit for hospital nurseries.

Yikes! All of them? There’s not a machine on the market that won’t damage your baby’s hearing? Well, that’s certainly the impression you might get from reading the article, but wait. How loud is 50 decibels?

I was actually kind of interested in how the decibel measurement system works once I started looking into this.. I was under the impression that a decibel was kind of like a pound or a meter. By that, I mean that 2 is twice as much as 1, and that ten was half as much as twenty, and so on. So working on the knowledge that a vacuum cleaner runs at about 70 decibels, I assumed that 50 would be, you know, about two thirds as loud as that. But I was wrong. 50 decibels is actually one quarter as loud as 70. It’s about the same volume as a quiet conversation at home or a quiet suburb, according to Purdue University’s handy little cheat sheet.

So it would seem that the reason pediatric nurseries are suggested to keep the noise down below 50 dB is more to do with creating a sleep-friendly environment than preventing hearing loss. It’s d