What is the primary function of dietary fiber?

Dietary fiber primarily serves to promote digestive health. It plays a crucial role in the functioning of the digestive system by adding bulk to the diet and facilitating regular bowel movements. Fiber helps to prevent constipation by absorbing water and forming a gel-like consistency, which aids in moving food through the intestines. Additionally, it supports a healthy gut microbiome by acting as a prebiotic, nourishing beneficial bacteria that contribute to overall digestive health.

Higher fiber intake is associated with a reduced risk of various gastrointestinal disorders, such as diverticulitis and irritable bowel syndrome. Moreover, certain types of fiber can help regulate blood sugar levels and lower cholesterol, further enhancing their role in promoting health. This makes fiber an essential component of a balanced diet, aligning with its primary function in supporting and maintaining digestive health.