NHA Certified Clinical Medical Assistant (CCMA)Foundational Knowledge and Basic ScienceMedium
A medical assistant is educating a patient about the importance of dietary fiber. Which of the following is the primary benefit of adequate fiber intake for digestive health?
- ARegulation of blood glucose levels
- BEnhancement of protein synthesis
- CIncreased absorption of fat-soluble vitamins
- DPromotion of regular bowel movements
Show answer & explanationAnswer & explanation
Correct answer: D. Promotion of regular bowel movements
Dietary fiber, particularly insoluble fiber, adds bulk to stool and helps it pass more easily through the digestive tract, preventing constipation and promoting regular bowel movements. Soluble fiber also contributes by forming a gel-like substance.
Why the other options are wrong
- A. Soluble fiber can help regulate blood glucose, but this is a secondary benefit; the primary digestive benefit is bowel regularity.
- B. Protein synthesis is primarily supported by adequate protein intake, not fiber.
- C. While some fibers may indirectly affect nutrient absorption, the primary role of fiber is not to increase fat-soluble vitamin absorption.
Dietary Fiber Benefits
Non-digestible carbohydrates found in plant foods that provide numerous health benefits, particularly for the digestive system and overall metabolic health.
- Promotes bowel regularity and prevents constipation.
- Helps maintain a healthy gut microbiome.
- Contributes to satiety and weight management.
Memory trick: Fiber's flow makes bowels go!