Juana Summers

I mean, that does sound pretty incredible. Agreed. The power of science. Indeed. All right. Last story of the day. There is a connection between gum disease and heart health? Yes.

That's really interesting. So I wonder, does this just mean we should all be taking extra special care of our teeth, brushing more, brushing better? Yes.

That's really interesting. So I wonder, does this just mean we should all be taking extra special care of our teeth, brushing more, brushing better? Yes.

That's really interesting. So I wonder, does this just mean we should all be taking extra special care of our teeth, brushing more, brushing better? Yes.

My dentist will be glad to know that I am sitting here with all of you and maybe I will go brush my teeth after this.

My dentist will be glad to know that I am sitting here with all of you and maybe I will go brush my teeth after this.

My dentist will be glad to know that I am sitting here with all of you and maybe I will go brush my teeth after this.

And scientists have solved a longstanding mystery of how hordes of bats emerging from caves avoid bat-on-bat collisions.

And scientists have solved a longstanding mystery of how hordes of bats emerging from caves avoid bat-on-bat collisions.

And scientists have solved a longstanding mystery of how hordes of bats emerging from caves avoid bat-on-bat collisions.

Yeah. Okay. So especially if you're training for a marathon, I think we can both imagine that running one would take a lot of energy. Neuroscientist Carlos Matute told me he's done 18 marathons, so he really knows it's exhausting. And he told me that he wondered, how do runners' bodies get the energy they need to make it to the finish line?

Yeah. Okay. So especially if you're training for a marathon, I think we can both imagine that running one would take a lot of energy. Neuroscientist Carlos Matute told me he's done 18 marathons, so he really knows it's exhausting. And he told me that he wondered, how do runners' bodies get the energy they need to make it to the finish line?

Yeah. Okay. So especially if you're training for a marathon, I think we can both imagine that running one would take a lot of energy. Neuroscientist Carlos Matute told me he's done 18 marathons, so he really knows it's exhausting. And he told me that he wondered, how do runners' bodies get the energy they need to make it to the finish line?

His new research in the journal Nature Metabolism suggests their brains might be depleting a fatty substance called myelin. So it's sort of like your brain is eating itself when it's running low on energy? Yeah, that's kind of how I was thinking about it. Myelin coats nerve cells and helps electrical signals travel, and it makes up about 40 percent of the brain.

His new research in the journal Nature Metabolism suggests their brains might be depleting a fatty substance called myelin. So it's sort of like your brain is eating itself when it's running low on energy? Yeah, that's kind of how I was thinking about it. Myelin coats nerve cells and helps electrical signals travel, and it makes up about 40 percent of the brain.

His new research in the journal Nature Metabolism suggests their brains might be depleting a fatty substance called myelin. So it's sort of like your brain is eating itself when it's running low on energy? Yeah, that's kind of how I was thinking about it. Myelin coats nerve cells and helps electrical signals travel, and it makes up about 40 percent of the brain.

Well, the changes were all temporary. The researchers followed up with the runners two months after the marathon and scanned their brains again. And they saw that the amount of myelin returned to normal.

Well, the changes were all temporary. The researchers followed up with the runners two months after the marathon and scanned their brains again. And they saw that the amount of myelin returned to normal.

Well, the changes were all temporary. The researchers followed up with the runners two months after the marathon and scanned their brains again. And they saw that the amount of myelin returned to normal.

Yeah, and the study has a few limitations. One of them is that they only looked at 10 runners' brains, so it was a very small sample size.