Which nutrient or food is most important for prevention of colorectal cancer?

• A. Protein.
• B. Omega-3 fatty acids.
• C. Antioxidants.
• D. Fiber.

Answer: (D)

Verified step by step guidance

1. Understand the role of fiber in colorectal cancer prevention: Fiber helps maintain a healthy digestive system by promoting regular bowel movements and reducing the time harmful substances stay in contact with the colon lining.
2. Learn about the types of fiber: There are two types of fiber—soluble and insoluble. Both types contribute to overall gut health, but insoluble fiber is particularly effective in adding bulk to stool and speeding up its passage through the digestive tract.
3. Identify food sources rich in fiber: Foods such as whole grains, fruits, vegetables, legumes, and nuts are excellent sources of dietary fiber. Incorporating these into your diet can help meet daily fiber requirements.
4. Compare fiber with other nutrients mentioned: Protein is essential for muscle repair and growth, omega-3 fatty acids are beneficial for heart and brain health, and antioxidants help combat oxidative stress. However, none of these have as direct a role in colorectal cancer prevention as fiber.
5. Understand the recommended daily intake of fiber: The general guideline is about 25 grams per day for women and 38 grams per day for men, though individual needs may vary. Meeting these recommendations can significantly contribute to colorectal cancer prevention.