Regina G. Barber

Well, not quite.

So we asked Matthew Steinhauser about it.

He does metabolic research at the University of Pittsburgh.

He wasn't involved in this research, and he said that the small size of all the studies within this larger review makes it hard to know for certain.

Yeah, it's really scary for a parent like me.

Last year, a number of parents testified to Congress about the dangers of AI chatbots.

A couple of those families believe that AI chatbots pushed their teenage sons to kill themselves.

Our colleague Ritu Chatterjee reported that one family testified that one of the chatbots, ChatGPT, even offered to help write their son's suicide note.

So some social scientists argue that at best, these reminders probably don't work.

And at worst, they might be harmful.

One of the authors of a recent opinion piece is social scientist Linnea Lestadius at the University of Wisconsin-Milwaukee.

She says the idea that reminders could be a big solution...

Yeah.

Long, long ways.

They looked at the blood samples from these runners before and after their races, and runners in both groups had damaged red blood cells.

But distance did matter.

There were more inflammation markers and types of damage in the ultramarathon group.

The results were published this week in the journal Red Blood Cells and Iron.

But that damage isn't the end of the story.

The runner's body starts generating new blood cells.