Weighing the Good and Bad of Weight-Loss Drugs

权衡减肥药物之利弊

Science Quickly

2026-01-09

22 分钟
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Drugs known as glucagon-like peptide-1 receptor agonists, colloquially called GLP-1 medications, have gone from relatively obscure diabetes treatments to blockbuster weight-loss medications. But is the hype backed up by science? In this episode, freelance science journalist Bethany Brookshire joins host Kendra Pierre-Louis to talk about how these drugs mimic natural hormones, why they’re so effective and what the latest research about their broader health effects says. Plus, we discuss what a recently rolled-out GLP-1 pill, the first of its kind approved for obesity, could mean for the future of weight loss. Recommended Reading: Wegovy Weight-Loss Pills Are Now Available in the U.S.—Here’s What That Means“Doctors Are Worried about Prescribing GLP-1s to Certain Patients,” by Bethany Brookshire, in National Geographic. Published online November 20, 2025 “The Unexpected Ways Ozempic-like Drugs Might Fight Dementia,” by Bethany Brookshire, in National Geographic. Published online June 17, 2025  “Is There Really an Ozempic Baby Boom? The Unexpected Ways GLP-1s Could Influence Fertility,” by Bethany Brookshire, in National Geographic. Published online November 4, 2025 E-mail us at sciencequickly@sciam.com if you have any questions, comments or ideas for stories we should cover! Discover something new everyday: subscribe to Scientific American and sign up for our daily newsletter. Science Quickly is produced by Kendra Pierre-Louis, Fonda Mwangi, Sushmita Pathak and Jeff DelViscio. This episode was edited by Alex Sugiura, with fact-checking by Shayna Posses and Aaron Shattuck. Our theme music was composed by Dominic Smith. Learn more about your ad choices. Visit megaphone.fm/adchoices
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  • For Scientific American Science Quickly, I'm Kendra Peer-Lewis in for Rachel Feldman.

  • Over the past few years,

  • GLP-1 drugs have gone from relatively obscure diabetes medications to household names for weight loss.

  • The trend really took off in 2021 when the FDA approved some aglitide for weight loss sold under the brand names Ozempic and Wigovi.

  • If you're not taking one, someone in your life likely is.

  • That includes celebrities such as Megan Treanor and Serena Williams,

  • who say they've used GLP-1 injectables.

  • With the rising popularity of these medications,

  • drug makers are busy creating newer and more potent formulations.

  • This week, the first GLP-1 weight loss pill became available in the U.S., an oral version of Ugovi.

  • And growing research suggests GLP-1s might have uses beyond diabetes and weight loss too.

  • But how do these drugs actually work?

  • And do they really stand up to the hype?

  • To get a better understanding of the GLP-1 landscape,

  • we reached out to Bethany Prickshire,

  • a freelance journalist who has extensively covered these medications.

  • Thanks so much for joining us today.

  • Thank you for having me.

  • I know that you've done a lot of work on GLP-1s,

  • and so can you tell us at a basic level what is a GLP-1 and then what is a GLP-1 drug?