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Science Vs

Sugar: How Bad Is It Really?

09 Oct 2025

34 min duration
5876 words
5 speakers
09 Oct 2025
Description

Sugar is getting tons of hate these days, from TikTok influencers telling us to cut added sugar out of our diets to RFK Jr. declaring that sugar is “poison.” But is sugar really that bad? And are certain kinds worse — or better — than others? We’ll find out by diving into the wild world of cane sugar, high-fructose corn syrup, honey and maple syrup. We talk to nutritionist Professor Jim Mann and research nutritional biologist Dr. Kimber Stanhope.  Find our transcript here: https://bit.ly/ScienceVsSugar  In this episode, we cover: (00:00) Sugar: The villain in our diets (02:22) The good side of sugar (04:51) How sugar is bad for us (12:19) Is high fructose corn syrup that bad? (23:44) Agave Syrup, Maple Syrup, and Honey (30:15) How much sugar is too much? This episode was produced by Meryl Horn, with help from Rose Rimler, Michelle Dang, and Ekedi Fausther-Keeys. We’re edited by Blythe Terrell. Mix and sound design by Bobby Lord. Our executive producer is Wendy Zukerman. Fact checking by Sam Lemonick. Music written by Peter Leonard, Bobby Lord, So Wylie, Emma Munger and Bumi Hidaka. Thanks to all the researchers we spoke to including Professor Barry Popkin, Dr. John White, Dr. Nick Fuller, Professor Paul Breslin, Dr. Richard Johnson, and Dr. Vasanti Malik.  Science Vs is a Spotify Studios Original. Listen for free on Spotify or wherever you get your podcasts. Follow us and tap the bell for episode notifications.  Learn more about your ad choices. Visit podcastchoices.com/adchoices

Audio
Transcription

Full Episode

0.537 - 30.379 Meryl Horn

Hi, I'm Meryl Horne filling in for Wendy Zuckerman, and you're listening to Science Versus. This is the show that pits facts against fructose. Today, we're looking at sugar. Is it really that bad? Sugar has always been the villain in our diets, that thing calling out to us that we know we should resist. And recently, it feels like everyone's piling on to tell us, don't do it.

0

31.34 - 34.305 Unknown

Sugar is one of the deadliest things you can eat.

0

34.685 - 39.673 Dr. Kimber Stanhope

Our bodies are not able to adapt to the amount of sugar that we're consuming, and it's making us so sick.

0

39.991 - 48.26 Unknown

Every time you eat sugar, every time, it does permanent damage to your body. Sugar is poison, and Americans need to know that.

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48.62 - 49.681 Professor Jim Mann

It is poisoning us.

50.362 - 69.762 Meryl Horn

That last voice you heard was RFK Jr., the Health and Human Services Secretary in the U.S., and he's recommended that Americans have zero added sugar in their food. Zero! And things get even more heated when the topic of high-fructose corn syrup comes up. We hear that this one is way worse for us than other types of sugar.

69.742 - 77.497 Unknown

High fructose corn syrup, where do I f***ing start? Literally cheap garbage with zero nutritional value.

78.058 - 83.287 Dr. Kimber Stanhope

Ah, high fructose corn syrup actually has a similar effect to obesity as fuel to a fire.

83.989 - 92.745 Meryl Horn

But then at the same time, influencers are telling us that there's a loophole here. Just eat natural sugars. Those are way healthier.

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