What role does roughage play in the digestive system?

Roughage, also known as dietary fiber, plays a vital role in the digestive system, particularly in promoting regular bowel movements and preventing constipation. It adds bulk to the stool, which helps it move more easily through the intestines. By absorbing water, roughage ensures that the stool remains soft and can be passed without straining. This function is crucial for maintaining overall digestive health and can help prevent issues such as hemorrhoids and diverticulosis.

In contrast, while roughage is important for digestive health, it does not directly aid in nutrient absorption, increase levels of HDL cholesterol, or enhance sugar metabolism. The primary function of roughage is to facilitate bowel movements, making it essential for preventing constipation and promoting a healthy digestive process.