What role does fiber play in digestive health?

Fiber plays a crucial role in digestive health primarily by helping to reduce the risk of various diseases. It contributes to maintaining a healthy digestive system by adding bulk to the stool, which aids in regular bowel movements and prevents constipation. This bulk helps food pass more easily through the digestive tract, promoting overall gut health.

Additionally, a diet rich in fiber is linked to a lower risk of developing conditions such as heart disease, type 2 diabetes, and colorectal cancer. Fiber also benefits the gut microbiome by serving as food for beneficial bacteria, which can lead to improved immune function and better digestive health.

In contrast, the other options do not accurately capture the primary role of fiber in digestive health. While fiber does not provide proteins or calories, nor is it converted into glucose, its protective and regulatory functions are essential for maintaining not only digestive health but general wellness as well.