Not All Beta-Glucans Are Created Equal: Why Structure, Source, and Testing Matter

1. What Are Beta-Glucans? Beta-glucans are naturally occurring fibers found in the cell walls of mushrooms, oats, barley, and certain yeasts. In mushrooms, they form part of the structural “skeleton” that gives strength to the cell wall. Scientists have studied them for decades because of their unique ability to interact with the human immune system …