How does dietary fiber aid in preventing constipation?

Dietary fiber plays a significant role in preventing constipation primarily by adding bulk to the stool. When fiber is consumed, it absorbs water in the intestines, which helps to increase the size and weight of the stool, making it softer and easier to pass. This bulking action stimulates bowel movements and promotes regularity, which is essential for preventing constipation.

Furthermore, a diet rich in fiber can also enhance gut health by supporting the growth of beneficial gut bacteria, improving overall digestion, and contributing to faster transit times within the gastrointestinal tract. Each of these factors is essential for maintaining healthy bowel habits.