Researchers nail down scientific 'biomarker' for SIDS and it could be a lifesaver
This discovery is groundbreaking for parents, doctors, and scientists worldwide.

Scientist identify a marker for babies at risk of SIDS.
Worrying over a sleeping baby comes with the territory of being a new parent. There are so many rules about safe sleep that it can be hard for parents to keep it all straight. The list of infant sleep rules designed to avoid Sudden Infant Death Syndrome, or SIDS, is endless: Never let the baby sleep on their tummy. Don’t put soft things in the crib. That crib bumper is super cute but you can’t keep it on there when the baby comes. Don’t ever co-sleep. Never cover a baby with a blanket.
SIDS is described as an unexplained death of an infant under the age of 1 year old. There is no determined cause and no warning signs, which is what makes it so terribly tragic when it happens. The worry over a sleeping baby stays with some parents far longer than it should. I recall my own mother coming to check in on me as a teenager, and I sometimes do the same to my own children even though they’re well over the age of being at risk for SIDS. The fact that there is no cause, no explanation, no warning, and nothing to reassure parents that their children will fare just fine means worrying about a sleeping child becomes second nature to most parents. It’s just what you do.
Well, maybe not anymore. Researchers from The Children’s Hospital Westmead in Sydney, Australia, have found a link to SIDS. The study released by the hospital explains not only how the babies succumb to SIDS, it also details why. For years, the medical community speculated that SIDS was caused by an unknown defect in the part of the brain that's responsible for breathing and arousal from sleep. The theory was that the normal startle response to arouse a sleeping baby when breathing stopped or was obstructed didn’t work when the supposed defect was present.
This new research could save lives.
Photo by Tim Bish on UnsplashResearchers in Australia analyzed dried blood from babies that had passed away from SIDS and compared it to infants who died of other causes and to healthy living infants. Through their research they were able to identify that the enzyme butyrylcholinesterase (BChE) was significantly lower in babies who died of SIDS in comparison to the other samples collected. BChE is a major factor in the brain’s arousal pathway, which explains why SIDS occurs during sleep.
If an enzyme that informs scientists of low BChE levels can be found in simple blood samples, this could be a game changer and a lifesaver. The hope is that doctors will eventually be able to devise a way to keep babies safe during sleeping hours, helping parents rest and reassuring those who have experienced the tragedy of losing a child to SIDS with answers.
Dr. Carmel Harrington, the lead researcher who helped make this discovery, lost her son to SIDS 1993, 29 years before this research would be available. She told the Australian Broadcasting Corporation, "Nobody could tell me. They just said it's a tragedy. But it was a tragedy that didn't sit well with my scientific brain.” So, she set out to solve the puzzle and provide some solace to grieving parents like her. "These families can now live with the knowledge that this was not their fault," she said.
This discovery is groundbreaking for parents, doctors, and scientists worldwide. The knowledge of what causes SIDS will inform research into a plan on how to proceed when low BChE levels are detected. Hopefully, when that's achieved, everyone will sleep a little easier.
This article originally appeared three years ago.
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There's a reason why some people can perfectly copy accents, and others can't
Turns out, there's a neurodivergent link.
A woman in black long sleeve shirt stands in front of mirror.
Have you ever had that friend who goes on vacation for four days to London and comes back with a full-on Queen's English posh accent? "Oooh I left my brolly in the loo," they say, and you respond, "But you're from Colorado!" Well, there are reasons they (and many of us) do that, and usually it's on a pretty subconscious level.
It's called "accent mirroring," and it's actually quite common with people who are neurodivergent, particularly those with ADHD (Attention Deficit Hyperactivity Disorder). According Neurolaunch, the self-described "Free Mental Health Library," "Accent mirroring, also known as accent adaptation or phonetic convergence, is the tendency to unconsciously adopt the accent or speech patterns of those around us. This linguistic chameleon effect is not unique to individuals with ADHD, but it appears to be more pronounced and frequent in this population."
Essentially, when people have conversations, we're constantly "scanning" for information—not just the words we're absorbing, but the inflection and tone. "When we hear an accent, our brains automatically analyze and categorize the phonetic features, prosody, and intonation patterns," writes Neurolaunch. For most, this does result in copying the accent of the person with whom we're speaking. But those with ADHD might be more sensitive to auditory cues. This, "coupled with a reduced ability to filter out or inhibit the impulse to mimic…could potentially explain the increased tendency for accent mirroring."
While the article explains further research is needed, they distinctly state that, "Accent mirroring in individuals with ADHD often manifests as an unconscious mimicry of accents in social situations. This can range from subtle shifts in pronunciation to more noticeable changes in intonation and speech rhythm. For example, a person with ADHD might find themselves unconsciously adopting a Southern drawl when conversing with someone from Texas, even if they’ve never lived in the South themselves."
People are having their say online. On the subreddit r/ADHDWomen, a thread began: "Taking on accents is an ADHD thing?" The OP shares, "My whole life, I've picked up accents. I, myself, never noticed, but everyone around me would be like, 'Why are you talking like that??' It could be after I watched a show or movie with an accent or after I've traveled somewhere with a different accent than my 'normal.'
They continue, "Apparently, I pick it up fast, but it fades out slowly. Today... I'm scrolling Instagram, I watch a reel from a comedian couple (Darcy and Jeremy. IYKYK) about how Darcy (ADHD) picks up accents everywhere they go. It's called ADHD Mirroring??? And it's another way of masking."
(The OP is referring to Darcy Michaels and his husband Jeremy Baer, who are both touring comedians based in Canada.)
Hundreds of people on the Reddit thread alone seem to relate. One comments, "Omfg I've done this my whole life; I'll even pick up on the pauses/spaces when I'm talking to someone who is ESL—but English is my first language lol."
Sometimes, it can be a real issue for those around the chameleon. "I accidentally mimicked a waitress's weird laugh one time. As soon as she was out of earshot, my family started to reprimand me, but I was already like 'oh my god I don’t know why I did that, I feel so bad.'"
Many commenters on TikTok were shocked to find out this can be a sign of ADHD. One jokes, "Omg, yes, at a store the cashier was talking to me and she was French. She's like 'Oh are you French too? No, I'm not lol. I'm very east coast Canada."
And some people just embrace it and make it work for them. "I mirror their words or phrase! I’m 30. I realized I start calling everyone sweetie cause my manager does & I work at coffee shop."