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Scientists just made a wild discovery: Addiction has genetic markers.

A cure for addiction might be found using, of all things, cocaine and rats.

Any elementary schooler who's completed a D.A.R.E. program can tell you about the dangers of addiction.

Remember this? Yep. Me too. Photo via U.S. Navy/Wikimedia Commons.


Far more difficult to explain, however, is how addiction can be passed from generation to generation.

We sometimes use labels like "addictive personality" for people who are born with what seems like a tendency toward addiction ... but do we know exactly which parts of the brain these addictive tendencies stem from? And if we did, would we then be able to prevent addiction before it ever became an issue?

Thanks to an all-star team of researchers, the answer to both of these questions seems to be "yes."

Researchers think we might be able to prevent addiction before it starts.

How did they come to this conclusion? With rats. Cocaine-addicted rats.

Photo via iStock.

Researchers from the University of Michigan and the University of Alabama at Birmingham published a new study in the Proceedings of the National Academy of Sciences journal in April 2016, claiming that they found certain genetic differences in rats who are susceptible to addiction.

Image by PublicDomainPictures/Pixabay.

According to the study's lead author, Shelly B. Flagel, addiction can be linked to two basic genes: fibroblast growth factor and dopamine D2 receptor.

“If [the rats] have certain low versus high levels of one of these molecules, then they can be a candidate for treatment to prevent addiction in the first place. Or, if we know that they’re an addict, to prevent relapse," said Flagel to Inverse.

As dreadful as it may sound, humans and rats are almost identical on a genetic level.

Photo via iStock.

So even though this link was only found in rats, there's a strong chance that the link could be present in humans too.

The Human Genome Project explains that "the rat genome contains about the same number of genes as the human genome ... and almost all human genes known to be associated with diseases have counterparts in the rat genome and appear highly conserved through mammalian evolution, confirming that the rat is an excellent model for many areas of medical research."

Once we know for sure what these "addiction genes" look like in rats, eventually we might be able to identify those genes in humans.

Someday, we might even be able to identify these "addiction precursors" in humans with something as simple as a blood or saliva test.

Basically, this research on cocaine-addicted rats could help us prevent addiction in humans before it becomes an issue.

“That’s one benefit of this study — that we were able to look at essentially genetically similar animals, and say, this is what their brains look like before they’ve been exposed to cocaine, and then this is what they look like after they’ve gone through this prolonged self-administration paradigm and develop or exhibit these addiction-like behaviors,” said Flagel.

“It’s just providing further evidence that this is clearly a key molecule."

So in the fight to stop addiction, it seems that a useful resource is...

GIF via "Review."

Oh, the irony. Science is truly an amazing, confusing, wonderful thing.

Joy

1991 blooper clip of Robin Williams and Elmo is a wholesome nugget of comedic genius

Robin Williams is still bringing smiles to faces after all these years.

Robin Williams and Elmo (Kevin Clash) bloopers.

The late Robin Williams could make picking out socks funny, so pairing him with the fuzzy red monster Elmo was bound to be pure wholesome gold. Honestly, how the puppeteer, Kevin Clash, didn’t completely break character and bust out laughing is a miracle. In this short outtake clip, you get to see Williams crack a few jokes in his signature style while Elmo tries desperately to keep it together.

Williams has been a household name since what seems like the beginning of time, and before his death in 2014, he would make frequent appearances on "Sesame Street." The late actor played so many roles that if you were ask 10 different people what their favorite was, you’d likely get 10 different answers. But for the kids who spent their childhoods watching PBS, they got to see him being silly with his favorite monsters and a giant yellow canary. At least I think Big Bird is a canary.

When he stopped by "Sesame Street" for the special “Big Bird's Birthday or Let Me Eat Cake” in 1991, he was there to show Elmo all of the wonderful things you could do with a stick. Williams turns the stick into a hockey stick and a baton before losing his composure and walking off camera. The entire time, Elmo looks enthralled … if puppets can look enthralled. He’s definitely paying attention before slumping over at the realization that Williams goofed a line. But the actor comes back to continue the scene before Elmo slinks down inside his box after getting Williams’ name wrong, which causes his human co-star to take his stick and leave.

The little blooper reel is so cute and pure that it makes you feel good for a few minutes. For an additional boost of serotonin, check out this other (perfectly executed) clip about conflict that Williams did with the two-headed monster. He certainly had a way of engaging his audience, so it makes sense that even after all of these years, he's still greatly missed.

Noe Hernandez and Maria Carrillo, the owners of Noel Barber Shop in Anaheim, California.

Jordyn Poulter was the youngest member of the U.S. women’s volleyball team, which took home the gold medal at the Tokyo Olympics last year. She was named the best setter at the Tokyo games and has been a member of the team since 2018.

Unfortunately, according to a report from ABC 7 News, her gold medal was stolen from her car in a parking garage in Anaheim, California, on May 25.

It was taken along with her passport, which she kept in her glove compartment. While storing a gold medal in your car probably isn’t the best idea, she did it to keep it by her side while fulfilling the hectic schedule of an Olympian.

"We live this crazy life of living so many different places. So many of us play overseas, then go home, then come out here and train,” Poulter said, according to ABC 7. "So I keep the medal on me (to show) friends and family I haven't seen in a while, or just people in the community who want to see the medal. Everyone feels connected to it when they meet an Olympian, and it's such a cool thing to share with people."

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Co-sleeping isn't for everyone.

The marital bed is a symbol of the intimacy shared between people who’ve decided to be together 'til death they do part. When couples sleep together it’s an expression of their closeness and how they care for one another when they are most vulnerable.

However, for some couples, the marital bed can be a warzone. Throughout the night couples can endure snoring, sleep apnea, the ongoing battle for sheets or circadian rhythms that never seem to sync. If one person likes to fall asleep with the TV on while the other reads a book, it can be impossible to come to an agreement on a good-night routine.

Last week on TODAY, host Carson Daly reminded viewers that he and his wife Siri, a TODAY Food contributor, had a sleep divorce while she was pregnant with their fourth child.

“I was served my sleep-divorce papers a few years ago,” he explained on TODAY. “It’s the best thing that ever happened to us. We both, admittedly, slept better apart.”

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