Certified Dietary Manager (CDM) 2025 – 400 Free Practice Questions to Pass the Exam

Dietary fiber plays a crucial role in digestive health primarily by aiding in regular bowel movements. It adds bulk to the stool, which helps to facilitate its passage through the intestines. This is essential for preventing constipation and maintaining overall bowel function. Fiber works by absorbing water, which helps to soften the stool, making it easier to pass. Additionally, a diet rich in fiber can promote the growth of healthy gut bacteria and support a healthy gut microbiome, contributing positively to digestive health.

The other options do not accurately reflect the primary function of dietary fiber. While some nutrients are absorbed during digestion, fiber does not play a direct role in enhancing nutrient absorption; in fact, it can sometimes bind to certain nutrients and slow their absorption. Increasing fat storage is not a function of fiber; instead, fiber can help regulate appetite and may contribute to weight management. Regarding flavor, while fiber-rich foods can be flavorful, it is not the primary role of dietary fiber within the digestive system. Therefore, the correct choice highlights the importance of fiber for promoting regularity and preventing gastrointestinal issues.