Which type of fiber is commonly found in whole grains and helps to regulate bowel movements?

Insoluble fiber is commonly found in whole grains and plays a significant role in regulating bowel movements. It adds bulk to the stool and aids in moving it through the digestive tract, which can help prevent constipation and promote overall digestive health. Foods rich in insoluble fiber include whole grain products, nuts, and various vegetables.

While soluble fiber, fermentable fiber, and functional fiber all have health benefits—such as regulating blood sugar levels and supporting gut health—insoluble fiber is the primary type that contributes to the mechanical aspect of bowel regulation. Soluble fiber can dissolve in water and form a gel-like substance, which helps with cholesterol management and blood sugar control, but it does not significantly increase stool bulk.