upworthy

research

Science

Researchers nail down scientific 'biomarker' for SIDS and it could be a lifesaver

This discovery is groundbreaking for parents, doctors, and scientists worldwide.

Photo by Picsea on Unsplash

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.

yawning baby

This new research could save lives.

Photo by Tim Bish on Unsplash

Researchers 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.

Popular

Surprising 16-year-long ADHD study reveals opposite of what researchers expected

The findings shed new light on how we might one day understand and manage ADHD.

Unsplash

Our understanding of ADHD has come a long way in just a few short years.

It wasn't even formally recognized as a medical condition until the 1960s! By the time the 90s rolled around, diagnoses and stimulant prescriptions were extremely prevalent.

Today, diagnoses and treatment are a lot more thoughtful and individualized, and there are more options for treatment and therapy. But we still have more to learn.

A new long-term study published in the Journal of Clinical Psychiatry has proven to be an excellent next step in getting a better understanding of the disorder.

483 participants who were diagnosed with ADHD in childhood were assessed for a period of 16 years. The study's authors wanted to get a sense of how ADHD symptoms might change over time.

What the researchers found surprised them.

In most participants, symptoms of ADHD fluctuated greatly over the years. What surprised them even more were the environmental factors that seemed to play a role in those fluctuations.


a close up of a human brain on a white background Photo by BUDDHI Kumar SHRESTHA on Unsplash

Researchers expected that greater life demands — like more responsibility at work, a heavier workload at school, major life changes, etc. — would exacerbate ADHD symptoms. What they found was the opposite.

It makes sense that a person that struggles with inattention or hyperactivity might have more trouble focusing when they have more "going on," more distractions to pull them in different directions.

It was a huge surprise to the researchers that, actually, people's ADHD symptoms seemed to ease up when life got hectic.

“We expected the relationship between environmental demands and ADHD symptoms to be the opposite of what we found,” study author, professor, and clinical psychologist Margaret H. Sibley explained. “We hypothesized that when life demands and responsibilities increased, this might exacerbate people’s ADHD, making it more severe. In fact, it was the opposite. The higher the demands and responsibilities one was experiencing, the milder their ADHD.”

I have a 4-year-old with ADHD and the findings totally track for me.

We find it's actually easier to be in perpetual motion sometimes — out running errands, doing activities, visiting friends and family — versus staying put too long. When we're just relaxing at home, that's when she tends to start bouncing off the walls!

Doing nothing or doing very little is not often a restful state for people with ADHD.

Their brains have more background noise than neurotypical brains — so a quiet, seemingly restful environment can sometimes amplify racing thoughts, negative self-talk, and impulsive behavior versus dampening it.

Of course, as always in science, you have to be careful assuming causation from the findings.

a boy doing schoolwork at wooden deskAnnie Spratt/Unsplash

The results of the study don't definitively prove that being busy causes a decrease in ADHD symptoms.

“This might mean that people with ADHD perform their best in more demanding environments (perhaps environments that have stronger immediate consequences, like needing to put food on the table for a family or pay rent monthly). It also might mean that people with ADHD take more on their plate when their symptoms are relatively at bay," Sibley says.

But the correlation is certainly strong and worthy of more study.

In the meantime, the study's authors think the results could be viewed in a hopeful light for people just learning to manage their ADHD.

“If you’re a doctor talking with a patient who is first getting diagnosed with ADHD, it’s a huge help for that person to hear the message that, ‘You’re going to have good years and not-so-good years, but things can go really well for you if you can get the right factors in place,'” Sibley said.

We're learning more and more about what those factors are — what might exacerbate symptoms, what types of things can help. And we're starting to get a better and better picture of how people can manage this challenging disorder.

Can a dog really trust you?

Dogs can smell fear, but can they sniff out the truth? Your dog might actually be smarter than you're giving it credit for. It turns out, dogs are pretty good at picking up on human behavior. Science says so. A team led by Akiko Takaoka of Kyoto University in Japan conducted a study which found out that dogs actually know if you're to be believed or not.

The study involved tricking dogs in the name of science. Humans have known for a long time that if you point at an object, a dog will run to it. Researchers utilized this information in their study. During the experiment, they pointed at a container that was filled with hidden food. Sure enough, the dog ran towards the container. Then, they pointed at a container that was empty. The dogs ran towards it, but found that it had no food.


The third time the researchers pointed at a container with food, the dogs refused to go to the container. They knew the person pointing wasn't reliable based off their previous experience. 34 dogs were used in the experiment, and every single dog wouldn't go towards the container the third time. This experiment either proves that dogs can spot a liar or that dogs have major trust issues.

animals, trust, science

Puppy in a bowl.

assets.rebelmouse.io

In other words, if you lie to your dog, your dog forms the opinion that your word isn't good and will behave accordingly. "Dogs have more sophisticated social intelligence than we thought. This social intelligence evolved selectively in their long life history with humans," said Takaoka, who was also surprised that dogs were quick when they "devalued the reliability of a human.”

John Bradshaw of the University of Bristol in the UK, who wasn't involved in this study, says that the results indicate that dogs prefer predictability. When gestures are inconsistent, dogs tend to become nervous and stressed.

The researchers have plans to repeat the experiment swapping out the dogs with wolves because wolves are closely related to dogs. The point of this isn't to get bitten by wolves, but rather, to see the "profound effects of domestication" on dogs.

This article originally appeared on 06.06.19.

Science

A study found 4 different categories of couples. Where do you belong?

What if I told you someone did find a way to "categorize" your love style but with actual real science?

This movie couple definitely could have used some healthy therapy.

Ever fallen into one of those Internet dating quizzes? You know, the ones that promise to categorize you? Like "what your astrological sign says about your relationship style."

They can be fun, but we all know they're mostly fluff.

What if I told you someone did find a way to "categorize" your love style but with actual real science?


Three relationship scientists asked about 400 couples to track how they felt about their relationship and how committed they felt to marrying their partner. They followed each of the couples for nine months. Not, like, literally followed them — that would be creepy. Instead, they just asked them a few questions and asked them to keep track of how committed they were feeling over time.

At the end of the nine months, the scientists collected all the couple's responses and delved deep into the data. They found that couples did indeed tend to fall into one of four categories.

Prepare yourself for some soul searching because you might just be:

1. The Conflicted, but Passionate

celebrity, relationships, commitment

Scarlett and Rhett from "Gone with the Wind."

Image from Insomnia Cured Here/Flickr.

This is the couple Facebook made the "It's Complicated" relationship status for. Their levels of commitment tend to go up and down over time, especially after arguments. But that's not necessarily a bad thing. These folks use those conflicts to help them make decisions about the relationship, and in fact, they didn't appear to be any more destined for a breakup than any of the other groups.

Also, as a bonus, they tend to follow those turbulent downs with passionate ups. "These couples operate in a tension between conflict that pushes them apart and passionate attraction that pulls them back together," said study author Brian Ogolsky.

2. The Partner-Focused

dating, hobbies, leisure activities

A nice night to have a couples walk.

Image from Yiannis Theologos Michellis/Flickr.

If your idea of a perfect date night is a long walk followed by eight hours of binge-watching "House of Cards" together, you might fall into this category.

Partner-focused couples tend to spend a lot of time together and share hobbies or leisure activities, and it's that shared time that tends to propel them forward. They tended to be more careful and thoughtful about their relationship decisions — more likely to build from the inside out — and tended to be the most satisfied overall.

3. The Social Butterflies

On the other hand, if your perfect evening with your partner involves grabbing all your friends and hitting the bars or breaking out Settlers of Catan for the hundredth time, this might be the category that best describes you. Social couples usually share a friend group and use that time spent with friends to inform and build their relationship as a couple.

"Having mutual friends makes people in these couples feel closer and more committed," said Ogolsky. They also tended to be pretty stable and have higher levels of love based on feelings of friendship toward each other, which can be a good indicator for long-term happiness.

4. The Dramatic

drama, community, therapy, social norms

A little Renaissance kissing with oil

Image from Sofi/Flickr.

Unfortunately, not every couple's path is easy. Things may start out good, but tend not to stay that way for dramatic couples. This type of couple tends to make decisions based on negative experiences or stuff from outside the relationship.

"These couples have a lot of ups and downs, and their commitment swings wildly," said Ogolsky. "You begin to see little things eroding, and you start to see the relationship in a negative light, and soon you give up," said Ogolsky.

Perhaps unsurprisingly, dramatic couples tended to break up the most, twice as much as other couples.

So what's best? Well, here's where this article differs from a lot of those Internet quizzes. Because the answer is that there isn't a "best" kind of relationship.

couples therapy, love, marriage, biology

What do healthy relationships start and end with?

Image from Maryam Mgonja/Wikimedia Commons.

Different couples work and grow differently. These are different pathways and it'd be a mistake to assume there's a "correct" way to love someone. Or even that you're forever locked into a certain style of relationships. "These are not predefined, for-life patterns," said Ogolsky.

And even in a single relationship, these patterns aren't predictors of destiny — a dramatic couple may, in fact, outlast a social one, and a partner-driven couple may be as passionate as anyone you could ever meet.

And the researchers willingly admit in their paper that their study doesn't cover all relationships. Many very happy couples have no desire to marry, for instance. And, it should be noted, that it wasn't too long ago that the U.S. didn't even allow all couples to get married!

Wait, you're not going to tell me how to find the perfect, golden, eternally-happy relationship?! Why even study this then?

Because, in our hearts, humans are social creatures, Ogolsky explained. Love, friendship, passion, and commitment are part of the human experience. Understanding relationships can be as important to understanding ourselves as studying chemistry or biology. They can even affect your health!

As for what you can learn from all this, the important takeaway is that what you use to make decisions — whether from conflict, from the inside, from the outside, or from friendship — can influence your level of commitment. It might be useful for couples to think not just about their choices but how they make their choices.

So ... what's your category?


This article originally appeared on 02.15.16