Fiber 101: Soluble, Insoluble, Functional Fiber, and Resistant Starch
Fiber is more than just a digestive aid. It is a category of carbohydrates with distinct physiological effects depending on type and source.
This episode provides a foundational overview of soluble fiber, insoluble fiber, functional fiber, and resistant starch. It clarifies how each type behaves in the body, how they influence cholesterol, blood glucose, satiety, and gut health, and why the distinction between naturally occurring and added fibers matters.
The conversation also connects fiber intake to the broader carbohydrate discussion from January and to the current Dietary Guidelines series. Emphasis is placed on food-based sources, dietary patterns, and the gap between recommended intake and actual consumption.
Understanding fiber requires more nuance than simply increasing grams per day. The type, source, and overall dietary pattern influence outcomes. This episode provides a practical, evidence-based framework for evaluating fiber intake without oversimplification.
Listen: Episode 228 What Are Carbohydrates? Fiber, Starch, and Sugar Explained
Read more: Fiber 101: Soluble, Insoluble, Functional Fiber, and Resistant Starch
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