What types of fiber are included in insoluble fiber?

Insoluble fiber consists primarily of cellulose and hemicellulose. These types of fiber are crucial for digestive health as they do not dissolve in water, which allows them to add bulk to stool and help maintain regular bowel movements. Cellulose is a complex carbohydrate that forms the structural component of plant cell walls, making it an important part of fruits, vegetables, and whole grains. Hemicellulose, found alongside cellulose in plant cell walls, contributes to the fibrous nature of these foods and helps with the movement of material through the digestive tract. Their indigestibility is what classifies them as insoluble fiber, promoting a healthy digestive system and preventing constipation.