Chapter 1: What is the main topic discussed in this episode?
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You're listening to Shortwave from NPR. Hey Short Wavers, Regina Barber here.
Chapter 2: What is intermittent fasting and how does it work?
And Rachel Carlson. And today we have our bi-weekly science news roundup featuring the hosts of All Things Considered. And today we have the legend, Mary Louise Kelly.
Woohoo! I'm so excited to be here and excited because I hear one of the stories you brought is about running, which is like the only sport I can actually do. So I'm here for you.
Yes, we're talking about running. Also, why intermittent fasting might not be a good weight loss solution.
And rethinking how to protect people's mental health when they talk with a chatbot.
All that on this episode of Shortwave, the science podcast from NPR. Okay, Mary Louise, where should we start?
I want to hear all three of these. Okay, I have not had time to get lunch today, so I'm kind of doing intermittent fasting. Oh, no. So let's start there. This is, just to explain, this is where you restrict the times you eat, right, rather than what you eat?
Yeah, so some people might fast every other day. Others might eat between the hours of 10 to 6, but do a 16-hour fast outside of that. The idea is that these short periods of fasting will cause your body to start burning through stored fat reserves.
The issue is we don't have a big, long-range study on how it compares with other types of dieting. So an international team of scientists did the next best thing. They looked at 22 smaller studies that compared intermittent fasting to other dietary interventions like eating less or eating specific types of foods. They also compared intermittent fasting to doing nothing. And what did they find?
They concluded that intermittent fasting did not work for weight loss in overweight or obese adults, as compared to either traditional dietary advice or even doing nothing.
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Chapter 3: What does recent research say about intermittent fasting for weight loss?
Where does this leave us? Do we think extreme exercise is dangerous?
Well, Travis and the researchers do not know whether this extreme amount of exercise is bad. The study was very small. It only looked at 23 runners. And it doesn't tell us anything about the long-term impact of these kinds of races. And then more broadly, Travis says definitely do not stop doing regular exercise. It's the best tool we have to keep our bodies healthy and age well.
Here's to keeping healthy and aging well.
And Mary Louise, thank you so much for joining us today. It was my total pleasure as always.
Looking forward to the next one.
If you or someone you know is considering suicide or in crisis, call or text the Suicide and Crisis Lifeline at 988. You can hear more of Mary Louise on Consider This and PR's afternoon podcast about what the news means for you.
And for more science stories just like this one, follow Shortwave on whatever app you're listening to. I produced this episode with Jordan Marie Smith and Hannah Chin. It was edited by Christopher Intagliata, William Troop, and Rebecca Ramirez.
Peter, Elena, and Jimmy Keeley were the audio engineers. I'm Regina Barber.
And I'm Rachel Carlson. Thanks for listening to Shortwave, the science podcast from NPR.
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