Everyone is talking about fibermaxxing right now, but here is what most of the advice gets wrong: piling on grams of fiber does almost nothing if you are only eating one kind. The word “fiber” on a nutrition label barely tells you what it will actually do inside your body.

In this episode of The Habit Healers Podcast, I walk you through why the old “soluble versus insoluble fiber” framework is misleading, and the two properties that actually predict what a fiber does: whether it forms a gel, and whether your gut bacteria can ferment it. I break it down into a simple system you can use at the grocery store: GEL, FEED, SWEEP. Gel-forming fibers like oats and psyllium lower LDL cholesterol and steady your blood sugar. Fermentable fibers like resistant starch feed your gut microbiome and produce short-chain fatty acids like butyrate. And sweep fibers keep everything moving. I also share why fiber diversity, paired with fermented foods, may do more for your gut health than simply eating more.

I’m Dr. Laurie Marbas, a lifestyle medicine physician, and my goal is always to turn the science into something you can actually live by. If you have ever added fiber and felt nothing change, or felt worse, this episode explains why, and exactly what to do this week.

What you’ll learn:

* Why “soluble versus insoluble fiber” is the wrong way to think about it

* How gel-forming fiber like oat beta-glucan and psyllium lowers LDL cholesterol

* What resistant starch and prebiotic fiber do for your gut microbiome

* Why short-chain fatty acids like butyrate matter for your colon and your brain

* How fiber diversity and fermented foods beat just adding grams

* A simple Monday plan to bring all three fiber types onto your plate

Dr. Marbas Substack Article: https://drlauriemarbas.substack.com/p/what-if-everything-you-know-about

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