What nutrient, primarily found in fruits, vegetables, and whole grains, is crucial for digestive health because the human body lacks the enzymes necessary to break it down, aiding in the regulation of blood sugar and cholesterol?

💡 Explanation:

Dietary fiber (or roughage) is a type of carbohydrate that the body cannot digest. It passes relatively intact through the stomach and intestines, providing bulk that aids bowel regularity and helps control blood sugar and cholesterol levels.