Fiber-maxxing: How much fiber is too much?
Nutrition Diva
Macmillan Holdings, LLC
4.4 • 1.8K Ratings
🗓️ 11 February 2026
⏱️ 14 minutes
🧾️ Download transcript
Summary
851. A current nutrition trend encourages people to dramatically increase their fiber intake. But how much fiber is actually helpful? And when can “more” start to backfire?
Find a transcript here.
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Transcript
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| 0:00.0 | fiber maxing is all over social media. And it is true that most Americans are falling well short |
| 0:06.3 | of the recommended intakes. But it's always possible to take a good thing too far. So what are the |
| 0:12.9 | risks of getting too much fiber? |
| 0:34.3 | Hello there. I'm Monica Rineagle, and you're listening to the Nutrition Diva podcast, a show where we take a closer look at nutrition news, research, and trends so that you can make more informed decisions about what you eat. |
| 0:39.3 | And today we're talking about fiber maxing, a trend that's been all over social media, encouraging people to push their fiber intake higher and higher in the name of |
| 0:46.4 | gut health, blood sugar control, weight management, and disease prevention. On the one hand, this focus on fiber may well have some benefits. |
| 0:58.2 | Most Americans get nowhere near the recommended amount of fiber, and higher fiber diets are |
| 1:04.2 | consistently associated with better digestive health, improved cholesterol levels, and a lower |
| 1:10.6 | risk of several chronic diseases. |
| 1:13.1 | But is it possible to get too much fiber? People promoting fiber maxing often report daily |
| 1:20.1 | intakes of 40, 50, even 60 grams of fiber or more. And that's significantly higher than the typical American intake, |
| 1:29.2 | which hovers somewhere around 15 to 18 grams per day. It's also well above the recommended |
| 1:35.7 | daily intake, which typically ranges from 25 to 35 grams per day depending on your age and your |
| 1:43.2 | sex. |
| 1:52.1 | Now, in practice, that might involve adding large amounts of bran, chia seeds, flax, beans, |
| 1:58.6 | lentils, vegetables, berries, and sometimes fiber supplements or powders to your meal plans. And the claim is that this will optimize your gut microbiome |
| 2:03.5 | and blunt blood sugar spikes. |
| 2:06.0 | Reduce your appetite, even lower your risk of colon cancer and other diseases. |
| 2:12.1 | These are all science-backed benefits of higher fiber diets. |
| 2:17.4 | And, you know, with colon cancer rates mysteriously |
| 2:20.6 | on the rise in younger adults, it also makes sense to me that Gen Z is paying attention to |
| 2:27.0 | lifestyle tweaks that focus on gut health. And it is also true, as I said, that the typical American |
... |
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